html {
  height: 100%;
  width: 100%;
  margin: 0;
}
body {
  font-family:
    "Open Sans", "HelveticaNeue", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 140%;
  color: #000;
  height: 100%;
  width: 100%;
  background-color: #fff;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  overflow-y: scroll;
}
table tr td {
  padding: 0;
  font-size: 16px;
  line-height: 140%;
  background-color: transparent;
  color: #000;
}
*,
*:before,
*:after {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
h1 {
  font-weight: normal;
}
img {
  border: 0;
}
* {
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  outline: 0;
}
li {
  margin-left: 2px;
  color: #888;
}
a:link,
a:visited {
  text-decoration: none;
  color: #666;
}
form {
  display: inline;
}
input {
  font-size: 16px;
}
.info {
  color: #0b6;
}
.positive {
  color: white;
  background-color: #0b6;
}
.negative {
  color: white;
  background-color: #aaa;
}
.danger {
  color: white;
  background-color: #e9534f;
}
.loading {
  color: white;
  border: 1px solid #0a5;
  background-color: #0a5;
}
.katex > .katex-html {
  white-space: normal;
}
.katex .mord {
  display: inline-block;
}
#steps > div.math > span > span.katex-display > span.katex,
#term_preview > span > span.katex-display > span.katex {
  line-height: 3 !important;
}
.katex-display {
  margin: 0.5rem 0 !important;
}
#mobile_container {
  display: table;
  height: 100%;
  width: 100%;
}
#row_div {
  display: table-row;
  height: 1%;
  background-color: #fafafa;
}
#keyboard_div {
  display: table-row;
  height: 100%;
  width: 100%;
  background-color: #ddd;
}
#control {
  position: relative;
  z-index: 1;
  margin-bottom: 20px;
}
div.row_main,
div.row_eng {
  height: 16.66%;
  width: 100%;
  display: table;
  border-spacing: 0;
  background-color: #ddd;
}
@media only screen and (max-width: 478px) {
  div.row_main,
  div.row_eng {
    border-spacing: 0;
  }
}
div.row_blank {
  height: 16.66%;
  width: 100%;
  display: table;
  border: 0;
  background-color: #ddd;
}
div.key_light {
  background-color: #fff;
}
div.key_dark {
  background-color: #f3f3f3;
}
div.key_variable {
  font-style: italic;
  font-family: Serif;
  font-size: 120%;
}
img.clear_button {
  float: right;
  margin-top: 14px;
  opacity: 0.4;
  width: 30px;
  text-decoration: none;
  cursor: pointer;
}
#clear_button_div {
  position: absolute;
}
div.nav_more {
  background-color: #ccc;
}
div.nav_abc {
  background-color: #ccc;
}
div.nav_dots {
  font-size: 24px;
  font-weight: bold;
  position: relative;
  bottom: 6px;
}
img.key_pi {
  height: 14px;
  width: 14px;
}
img.key_block {
  height: 30px;
  width: 30px;
  vertical-align: middle;
}
#k_en_space {
  width: 33.3%;
  background-color: #f1f1f1;
}
div.keyboard_table {
  border-spacing: 0;
  border-collapse: separate;
  height: 100%;
}
div.row_main > div {
  width: 16%;
  display: table-cell;
  vertical-align: middle;
  text-align: center;
  font-size: 26px;
  color: #333;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
#nav_trigger {
  position: absolute;
  left: 12px;
  top: 18px;
  z-index: 2;
  height: 24px;
  width: 24px;
  cursor: pointer;
}
@media only screen and (max-width: 478px) {
  div.row_main > div {
    font-size: 18px;
  }
}
div.row_eng > div {
  width: 10%;
  display: table-cell;
  vertical-align: middle;
  text-align: center;
  font-size: 26px;
  color: #333;
  background-color: #fff;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
@media only screen and (max-width: 478px) {
  div.row_eng > div {
    font-size: 18px;
  }
}
#term_preview_div {
  visibility: hidden;
  width: 100%;
  display: block;
  text-align: left;
  margin: 0;
  padding: 0;
}
#term_preview {
  padding-top: 0;
  visibility: hidden;
  font-size: 20px;
  float: left;
  margin-block-start: 0;
  margin-block-end: 0;
  min-height: 120px;
}
#term_preview_mobile_keyboard_margin_bottom {
  height: 0;
}
@media only screen and (min-height: 800px) and (orientation: portrait) {
  #term_preview_mobile_keyboard_margin_bottom {
    height: 300px;
  }
}
.term_preview_mobile {
  margin-left: 16px;
}
.problem_input_mobile_outer {
  display: block;
  border: solid 1px #e1e1e1;
  background-color: #fff;
  outline-width: 0;
  font-size: 18px;
  margin: 0;
  width: 100%;
  max-width: 100%;
  height: 60px;
  padding: 2px 10px;
  float: left;
}
.problem_input_mobile {
  position: relative;
  top: 15px;
  padding: 0;
  line-height: 150%;
  overflow: auto;
  word-wrap: break-word;
  max-height: 60px;
}
.submit_solve {
  padding: 0;
  background: #ccc;
  cursor: pointer;
  opacity: 1;
  border: 1px solid #ccc;
  font-weight: bold;
  font-size: 22px;
  color: #fff;
  text-align: center;
  display: inline;
}
img.search_icon {
  position: relative;
  height: 32px;
  width: 32px;
  top: 6px;
}
.right_rounded {
  -webkit-top-right-border-radius: 4px;
  border-top-right-radius: 4px;
  -webkit-bottom-right-border-radius: 4px;
  border-bottom-right-radius: 4px;
}
div.k_en_up,
div.k_en_bksp {
  margin-right: 1px;
  padding: 5px 2px;
}
img.k_en_up {
  width: 20px;
  height: 20px;
  display: inline-block;
  user-select: none;
}
img.k_en_bksp {
  width: 25px;
  display: inline-block;
  user-select: none;
  margin: auto 5px;
  position: relative;
  top: 2px;
}
img.backspace {
  width: 25px;
  display: inline-block;
  user-select: none;
  margin: 10px 5px;
}
div.backspace_div {
  width: 40px;
  border: solid 1px #ccc;
  margin: 10px 0 10px 12px;
  height: 38px;
}
#nav_clear {
  display: block;
  float: right;
  user-select: none;
  margin-left: 10px;
}
#nav_backspace {
  display: block;
  float: right;
  user-select: none;
}
div.example_bubble {
  position: absolute;
  padding: 10px;
  margin: 0 5px;
  width: 190px;
  color: #000;
  top: -52px;
  border-radius: 4px;
  background: #eee;
  color: #888;
  font-size: 14px;
}
div.example_bubble:after {
  content: "";
  display: block;
  position: absolute;
  bottom: -10px;
  left: 50px;
  width: 0;
  border-width: 10px 10px 0;
  border-style: solid;
  border-color: #eee transparent;
}
div.placeholder_text {
  color: #000;
  font-size: 18px;
  display: inline;
}
@media only screen and (max-width: 400px) {
  div.placeholder_text {
    font-size: 16px;
  }
}
div.question_mark {
  background-color: #ffcba4;
  display: inline;
  color: red;
}
.sprite {
  background-image: url("/img/spritesheet.png?2");
  background-repeat: no-repeat;
  display: inline-block;
  margin: 0 auto;
}
.sprite-autocomp_arrow {
  width: 16px;
  height: 16px;
  background-position: -5px -5px;
}
.sprite-autocomp_arrow_example {
  width: 12px;
  height: 12px;
  background-position: -31px -5px;
}
.sprite-key_abs {
  width: 30px;
  height: 30px;
  background-position: -48px 0;
}
.sprite-key_fraction {
  width: 30px;
  height: 30px;
  background-position: -78px 0;
}
.sprite-key_mixed_fraction {
  width: 30px;
  height: 30px;
  background-position: -108px 0;
}
.sprite-key_nth_power {
  width: 30px;
  height: 30px;
  background-position: -138px 0;
}
.sprite-key_nth_root {
  width: 30px;
  height: 30px;
  background-position: -168px 0;
}
.sprite-key_square_root {
  width: 30px;
  height: 30px;
  background-position: -198px 0;
}
.sprite-key_squared {
  width: 30px;
  height: 30px;
  background-position: -228px 0;
}
.sprite-popup {
  width: 14px;
  height: 13px;
  background-position: -263px -5px;
}
#choose_topic_button_mobile {
  color: #fff;
  font-size: 14px;
  display: inline-block;
  margin: 0 auto;
  padding: 4px 12px;
  border-radius: 4px;
  background-color: #4ccf93;
  box-shadow: 0 0 8px #ccc;
}
.site_wrap {
  min-height: 100%;
  min-width: 100%;
  height: 100%;
  width: 100%;
  position: relative;
  top: 0;
  bottom: 100%;
  left: 0;
  z-index: 1;
}
div.navigation_drawer {
  display: none;
}
div.triangle_up {
  width: 0;
  height: 0;
  border-left: 16px solid transparent;
  border-right: 16px solid transparent;
  border-bottom: 16px solid #ddd;
  margin: 0 auto;
}
#enter_problem_box {
  visibility: hidden;
  margin: 16px;
  text-align: center;
  height: 24px;
}
#clear_button {
  opacity: 0.3;
  cursor: pointer;
  width: 20px;
  height: 20px;
  margin-left: 8px;
  position: relative;
  top: 6px;
}
#edit_icon {
  filter: invert(100%);
  width: 16px;
  height: 16px;
  margin-left: 8px;
  position: relative;
  top: 2px;
}
#typed-cursor {
  font-weight: bold;
  color: black;
}
#typed-cursor.blinking {
  -webkit-animation: 1s blink step-end infinite;
  -moz-animation: 1s blink step-end infinite;
  -ms-animation: 1s blink step-end infinite;
  -o-animation: 1s blink step-end infinite;
  animation: 1s blink step-end infinite;
}
@keyframes blink {
  from,
  to {
    color: transparent;
  }
  50% {
    color: black;
  }
}
@-moz-keyframes blink {
  from,
  to {
    color: transparent;
  }
  50% {
    color: black;
  }
}
@-webkit-keyframes blink {
  from,
  to {
    color: transparent;
  }
  50% {
    color: black;
  }
}
@-ms-keyframes blink {
  from,
  to {
    color: transparent;
  }
  50% {
    color: black;
  }
}
@-o-keyframes blink {
  from,
  to {
    color: transparent;
  }
  50% {
    color: black;
  }
}
div.user_form_div {
  width: 100%;
  max-width: 400px;
  padding: 20px 20px;
  margin: 60px 0;
  margin-left: auto;
  margin-right: auto;
  background-color: #fff;
  box-shadow: 0 3px 3px #ccc;
  color: #333;
}
div.user_form_div_mobile {
  width: 100%;
  padding: 20px 20px;
  margin: 0;
}
img.credit_cards {
  width: 200px;
}
div.securely_processed {
  margin-top: 5px;
  font-size: 12px;
  color: #666;
  display: block;
}
button.alert {
  background-color: #e9534f;
}
label.remember_me {
  color: #666;
  font-size: 14px;
  white-space: nowrap;
  position: relative;
}
div.form_heading {
  font-size: 26px;
  margin-bottom: 32px;
  color: #333;
  line-height: 125%;
}
div.form_heading_with_sub_heading {
  font-size: 26px;
  margin-bottom: 10px;
  color: #333;
  line-height: 125%;
}
div.form_message {
  font-size: 16px;
  color: #333;
}
form.user_form {
  width: 100%;
  display: block;
}
input.form_input {
  width: 100%;
  font-size: 16px;
  height: auto;
  padding: 10px;
  margin-bottom: 10px;
  -webkit-appearance: none;
  -moz-appearance: none;
  border: 1px solid #ccc;
}
input.confirmation_code_input {
  width: 100%;
  font-size: 26px;
  height: auto;
  padding: 10px;
  margin-bottom: 10px;
  text-align: center;
  -webkit-appearance: none;
  -moz-appearance: none;
  border: 1px solid #ccc;
  color: #0b6;
}
input.number_input {
  width: 100%;
  font-size: 20px;
  padding: 15px;
  margin-bottom: 10px;
  margin-left: auto;
  margin-right: auto;
  -webkit-appearance: none;
  -moz-appearance: none;
  border: 1px solid #ccc;
}
input.captcha {
  width: 90px;
  font-size: 16px;
  height: 30px;
  padding: 5px;
  margin-bottom: 10px;
  vertical-align: top;
  -webkit-appearance: none;
  -moz-appearance: none;
  border: 1px solid #ccc;
}
div.log_in_column {
  width: 50%;
  float: left;
}
a:link.form_link,
a:visited.form_link {
  color: #0b6;
}
div.form_row_div {
  width: 100%;
  text-align: center;
  margin-top: 20px;
  font-size: 16px;
  color: #333;
  display: block;
}
div.superscript_heading {
  font-size: 14px;
  font-weight: bold;
  color: #999;
}
div.sub_heading {
  font-size: 14px;
  font-weight: bold;
  color: #999;
}
div.account_row {
  margin: 10px 0;
}
div.account_row > div {
  display: block;
  color: #999;
  font-size: 12px;
}
div.account_divider {
  margin-top: 20px;
  border-bottom: 1px solid #ddd;
  margin-bottom: 20px;
}
#email {
  margin-bottom: 10px;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  width: 100%;
}
#password {
  margin-bottom: 5px;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
  width: 100%;
}
#password_eye {
  float: right;
  position: relative;
  bottom: 40px;
  right: 10px;
  z-index: 2;
  height: 0;
  display: none;
}
div.show_password_text {
  display: inline;
  font-size: 14px;
  color: #666;
  position: relative;
  bottom: 4px;
}
input[type="checkbox"] {
  width: 20px;
  height: 20px;
  position: relative;
  top: 4px;
  right: 4px;
}
div.tell_me_more_button {
  display: block;
  padding: 6px 12px;
  color: white;
  background-color: #0b6;
  border-radius: 4px;
  margin-left: auto;
  margin-right: auto;
  width: 200px;
  text-align: center;
  box-shadow: 0 3px 3px #aaa;
  cursor: pointer;
}
div.no_thanks_button {
  display: block;
  padding: 6px 12px;
  color: white;
  background-color: #aaa;
  border-radius: 4px;
  margin-left: auto;
  margin-right: auto;
  width: 200px;
  text-align: center;
  box-shadow: 0 3px 3px #aaa;
  cursor: pointer;
}
.language_picker {
  background-color: transparent;
  display: inline-block;
  padding: 0;
  overflow: hidden;
  transition: all 0.3s ease;
  margin-top: -16px;
  vertical-align: top;
  height: 60px;
  color: black;
  text-align: left;
  z-index: 999999;
  position: relative;
  margin: -16px;
}
.language_picker a li {
  background-color: #fff;
}
.language_picker a:first-child li {
  background-color: inherit;
}
.language_picker:hover {
  height: 360px;
}
.language_picker a {
  color: black;
  text-decoration: none;
}
.language_picker li {
  display: block;
  padding: 0 16px;
  line-height: 60px;
  color: #606060;
  background-color: transparent;
  cursor: pointer;
}
.language_picker a li:hover {
  background-color: #0b6;
  color: white !important;
}
.language_picker li img {
  margin-right: 5px;
}
.tt-query {
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
}
.tt-hint {
  color: #999;
}
.twitter-typeahead {
  width: 100%;
}
.tt-menu {
  width: 580px;
  margin: 5px 0;
  padding: 8px 0;
  background-color: #fff;
  border: 1px solid #ccc;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}
.tt-suggestion {
  padding: 5px 10px;
  font-size: 18px;
  line-height: 24px;
}
.tt-suggestion:hover {
  cursor: pointer;
  color: #fff;
  background-color: #f5f5f5;
}
.tt-suggestion.tt-cursor {
  color: #fff;
  background-color: #eee;
}
.tt-suggestion p {
  margin: 0;
}
.autocomp_func_name {
  color: #708090;
  font-size: 20px;
  float: left;
}
.autocomp_func_desc {
  color: #aaa;
  font-size: 16px;
  margin-left: 10px;
  float: left;
  line-height: 30px;
}
.autocomp_method_name {
  color: #0b6;
  font-size: 20px;
  margin-bottom: 2px;
  float: left;
}
.autocomp_method_arrow {
  color: #333;
  font-size: 30px;
  float: right;
  color: #0b6;
}
.autocomp_method_desc {
  color: #999;
  font-size: 14px;
  position: relative;
  top: 2px;
  float: left;
  margin-left: 10px;
}
.autocomp_method_help_row {
  color: #333;
}
.autocomp_method_help_row:hover {
  color: #0b6;
}
.autocomp_method_help_arrow {
  font-size: 16px;
  margin: 0 5px;
  color: #0b6;
  display: inline;
}
.autocomp_method_examples_heading {
  font-size: 14px;
  color: #666;
  font-weight: bold;
  display: inline-block;
  vertical-align: top;
  margin-right: 10px;
}
.autocomp_method_examples {
  font-size: 14px;
  color: #000;
  display: inline-block;
}
#graph_div {
  width: 500px;
  height: 500px;
  min-width: 500px;
  min-height: 500px;
  margin-bottom: 50px;
  cursor: pointer;
}
.graph_line_0 {
  fill: none;
  stroke: #0b6;
  stroke-width: 2px;
}
.graph_line_1 {
  fill: none;
  stroke: #ff7f50;
  stroke-width: 2px;
}
.graph_line_2 {
  fill: none;
  stroke: #72c6ed;
  stroke-width: 2px;
}
.graph_line_3 {
  fill: none;
  stroke: #f6f;
  stroke-width: 2px;
}
.axis {
  fill: #999;
}
div.graph_instruction {
  margin: 0 10px;
  color: #999;
  font-size: 14px;
  font-style: italic;
}
div.method_choice_box {
  display: table;
  margin-bottom: 30px;
}
div.method_choice {
  display: inline-block;
  padding: 5px 15px;
  text-align: center;
  color: #aaa;
  margin-right: 5px;
  margin-bottom: 6px;
  font-size: 14px;
  min-width: 160px;
  border: 1px solid #aaa;
  border-radius: 4px;
}
div.method_choice_selected {
  display: inline-block;
  padding: 5px 15px;
  text-align: center;
  color: #0b6;
  margin-right: 5px;
  margin-bottom: 6px;
  font-size: 14px;
  min-width: 160px;
  border: 1px solid #0b6;
  border-radius: 4px;
}
div.method_heading {
  color: #aaa;
  display: block;
  font-size: 14px;
  font-weight: bold;
  text-transform: uppercase;
  margin-bottom: 2px;
}
div.method_choices {
  display: block;
}
div.method_choice_unselected {
  display: inline-block;
  color: #999;
  cursor: pointer;
}
div.content {
  min-height: 100%;
  height: auto !important;
  height: 100%;
  margin: 0 auto -60px;
  padding: 0;
}
div.push {
  height: 60px;
}
div.content_footer {
  height: 60px;
}
.footer_text {
  font-size: 14px;
  display: inline;
  line-height: 60px;
  color: #666;
}
div.footer_div {
  box-shadow: 0 -2px 2px #eee;
  display: block;
}
div.mobile_inner_footer {
  border-top: 1px solid #eee;
  background-color: #aaa;
  font-size: 12px;
  height: 60px;
  line-height: 60px;
  text-align: center;
  color: #bbb;
}
div.mobile_inner_footer > a:first-child {
  margin-left: 0;
}
div.mobile_inner_footer > * {
  color: #fff;
  margin: 0 10px;
}
table.content_table {
  table-layout: fixed;
  width: 100%;
}
::placeholder {
  color: #aaa;
  opacity: 1;
}
:-ms-input-placeholder {
  color: #aaa;
}
::-ms-input-placeholder {
  color: #aaa;
}
.problem_input_desktop {
  border: solid 1px #e1e1e1;
  background-color: #fff;
  outline-width: 0;
  font-size: 18px;
  padding: 0 20px;
  margin: 0;
  width: 100%;
  height: 60px;
  line-height: normal !important;
}
img.cymath_text {
  margin-right: 10px;
}
input.submit {
  font-size: 16px;
  width: 80px;
  height: 26px;
  margin: 0;
  padding: 0;
}
.big_button {
  text-shadow: none !important;
  border: none !important;
  width: 100%;
  color: white;
  height: 44px;
  line-height: 44px;
  margin: 0;
  font-size: 18px;
  border-radius: 4px;
  cursor: pointer;
  text-align: center;
  box-shadow: 0 3px 3px #ccc;
}
img.app_download_button {
  position: relative;
  top: 5px;
  margin-right: 10px;
  width: 135px;
  height: 40px;
}
div.solution_section_title {
  color: #999;
  font-size: 18px;
  margin-bottom: 24px;
  margin-top: 12px;
}
.popular_table {
  width: 100%;
  margin-bottom: 50px;
}
.popular_cell {
  padding: 10px 0;
  border: 1px solid #ddd;
  text-align: center;
  font-weight: bold;
  width: 50%;
}
td.ld_line {
  border-bottom: solid 1px black;
  padding-left: 10px;
  padding-right: 10px;
}
td.ld_bar {
  border-right: solid 1px black;
  padding-left: 10px;
  padding-right: 10px;
  text-align: right;
  width: 125px;
}
td.ld {
  padding-left: 10px;
  padding-right: 10px;
  width: 60px;
}
td.line {
  border-top: solid 1px black;
}
td.grayline {
  border-top: solid 1px gray;
}
td.menu {
  border-bottom: solid 1px gray;
}
sup {
  vertical-align: 1;
  font-size: 75%;
}
div.inline_choices {
  margin-bottom: 15px;
  display: block;
}
div.list_title {
  font-size: 24px;
  display: block;
  margin-bottom: 30px;
}
div.block_div {
  border: 1px solid #e1e1e1;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow:
    0 6px 12px rgba(0, 0, 0, 0.02),
    0 6px 12px rgba(0, 0, 0, 0.05);
  background-color: #fff;
}
div.layout_div {
  margin: 0;
}
div.layout_div_mobile {
  margin: 0 16px;
}
div.sharing_title {
  font-size: 16px;
  font-weight: bold;
  color: #666;
  display: block;
  margin-bottom: 10px;
}
img.email_button {
  height: 20px;
  width: 60px;
  border-radius: 2px;
  border: 1px solid #888;
  margin-right: 5px;
}
img.email_button:hover {
  -webkit-filter: brightness(0.9);
  filter: brightness(0.9);
}
#facebook_share {
  cursor: pointer;
  width: 60px;
  height: 20px;
  border-radius: 2px;
  border: 1px solid #4763b2;
  margin-right: 5px;
}
#facebook_share:hover {
  -webkit-filter: brightness(0.9);
  filter: brightness(0.9);
}
div.graph_button {
  display: block;
  margin-bottom: 20px;
  font-style: italic;
}
a:link.graph_button_link,
a:visited.graph_button_link {
  color: #0b6;
}
div.row_desktop {
  height: 40px;
  width: 100%;
  display: table;
  cursor: pointer;
  border-spacing: 4px;
}
div.row_desktop > div {
  width: 10%;
  display: table-cell;
  vertical-align: middle;
  text-align: center;
  font-size: 18px;
  color: #666;
  border: 1px solid #ddd;
  background-color: #f9f9f9;
  border-radius: 4px;
  padding: 4px;
}
div.row_desktop > div:hover {
  background-color: #fff;
}
img.chart_icon {
  height: 12px;
  width: 12px;
  position: relative;
  margin-left: 5px;
}
div.half_space {
  word-spacing: -2pt;
}
input.url {
  font-size: 12px;
  white-space: nowrap;
  width: 300px;
}
div.copy_this_link {
  font-size: 12px;
  white-space: nowrap;
  margin-top: 5px;
}
h1.topic {
  font-size: 28px;
  color: #333;
  margin-top: 16px;
  margin-bottom: 32px;
  margin-left: 0;
  display: inline-block;
  line-height: 30px;
}
h2.sub_topic {
  font-size: 20px;
  color: #333;
}
h1.topic_compact {
  font-size: 28px;
  color: #333;
  margin-top: 16px;
  margin-bottom: 8px;
  display: block;
  line-height: 125%;
}
h2.topic_sub_text {
  font-size: 14px;
  font-weight: bold;
  color: #707070;
}
h1.first {
  margin-top: 20px !important;
}
h1.heading {
  font-size: 28px;
  color: #333;
  margin-top: 60px;
  margin-bottom: 30px;
  margin-left: 0;
  display: block;
  font-weight: bold;
}
h2.heading {
  font-size: 20px;
  margin-top: 40px;
  margin-bottom: 20px;
  color: #333;
  display: block;
}
h3.heading {
  font-size: 18px;
  margin-top: 30px;
  margin-bottom: 15px;
  color: #333;
  display: block;
}
p.sub_text {
  font-size: 13px;
  padding: 0;
  margin-right: 0;
  margin-bottom: 15px;
  margin-left: 0;
}
a:link.none,
a:visited.none {
  text-decoration: none;
}
a:hover.none {
  text-decoration: none;
}
a:link.footer_link,
a:visited.footer_link {
  color: #666;
  margin: 0 16px;
}
a:hover.footer_link {
  color: #0b6;
}
a:link.app_link,
a:visited.app_link {
  color: #0b6;
  font-weight: bold;
  margin-left: 16px;
}
a:hover.app_link {
  opacity: 0.6;
}
a:link.underline,
a:visited.underline {
  text-decoration: underline;
  color: #666;
}
a:link.highlight,
a:visited.highlight {
  color: #0b6;
}
a:link.disambiguate,
a:visited.disambiguate {
  color: #0b6;
}
a:link.reason_link,
a:visited.reason_link {
  border-bottom: 1px dotted #333;
  text-decoration: none;
  color: #333;
}
a:link.workspace_marketing,
a:visited.workspace_marketing {
  border-bottom: 1px dotted #aaa;
  text-decoration: none;
  color: #aaa;
}
a:link.highlight_on_hover,
a:visited.highlight_on_hover {
  color: #666;
}
a:hover.highlight_on_hover {
  color: #0b6;
}
a:link.debug,
a:visited.debug {
  color: green;
}
a:hover.debug {
  color: green;
}
a:link.practice,
a:visited.practice {
  color: #333;
}
a:hover.practice {
  color: #0b6;
}
a:link.rule,
a:visited.rule {
  color: #333;
}
a:hover.rule {
  color: #0b6;
}
a:link.rule_underline,
a:visited.rule_underline {
  color: #aaa;
  font-weight: bold;
  border-bottom: 2px dotted #aaa;
}
a:hover.rule_underline {
  color: #0b6;
  border-bottom: 2px dotted #0b6;
}
a:link.implied_parentheses,
a:visited.implied_parentheses {
  text-decoration: none;
  border-bottom: 2px dotted #72ecac;
  color: #72ecac;
}
.topic_title {
  font-size: 16px;
  margin-bottom: 7px;
  color: #606060;
}
.topic_body {
  font-size: 14px;
  margin-top: 5px;
  margin-bottom: 0;
}
.blog_entry {
  font-size: 14px;
}
.blog_entry > a:link,
.blog_entry > a:visited {
  color: #666;
}
.blog_entry > a:hover {
  color: #0b6;
}
div.category_name {
  color: #666;
  display: inline;
}
div.modify_button {
  margin-left: 0 2px;
  background-color: #2ecc71;
  text-align: center;
  padding: 10px 5px;
  width: 100%;
  font-size: 16px;
  -moz-border-radius: 4px;
  border-radius: 4px;
  display: nowrap;
  color: #fff;
  cursor: pointer;
}
div.check_answer_button {
  padding: 0 18px;
  background: #fff;
  cursor: pointer;
  opacity: 1;
  border: 1px solid #0b6;
  font-weight: bold;
  font-size: 14px;
  color: #0b6;
  margin-top: 8px;
  height: 40px;
  line-height: 40px;
  display: inline-block;
  text-align: center;
  border-radius: 4px;
}
div.check_answer_button:hover {
  opacity: 0.6;
}
div.check_answer_div {
  display: none;
}
img.info_icon {
  width: 15px;
  height: 15px;
  position: relative;
  top: 2px;
  margin-left: 4px;
  margin-right: 2px;
  opacity: 0.5;
}
.message {
  display: block;
  color: #303030;
  font-weight: bold;
}
.section_heading {
  display: block;
  font-size: 20px;
  color: gray;
  margin-bottom: 30px;
}
.reference_heading {
  display: block;
  font-size: 16px;
  color: #666;
  font-weight: bold;
  margin-top: 15px;
  margin-bottom: 5px;
}
.trig_id_heading {
  font-size: 16px;
  font-weight: bold;
  color: #707070;
  margin-top: 30px;
}
.trig_id_heading_no_margin {
  font-size: 16px;
  font-weight: bold;
  color: #707070;
}
.h1 {
  font-weight: bold;
}
.c1 {
  padding-bottom: 10px;
}
.time_icon {
  position: relative;
  top: 3px;
}
.small {
  font-size: 14px;
}
.tiny {
  font-size: 12px;
}
img.keyboard_icon_desktop {
  height: 15px;
  width: 23px;
}
img.keyboard_icon_desktop:hover {
  opacity: 0.6;
}
.greyscale {
  -webkit-filter: grayscale(100%);
  filter: grayscale(100%);
}
#examples_box {
  text-align: left;
  width: 200px;
  background-color: #f9f9f9;
  padding: 8px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
  box-shadow: 0 0 8px #ccc;
}
#examples_section {
  position: absolute;
  margin-top: 5px;
  width: 100%;
}
#examples_button {
  display: inline;
  font-size: 18px;
  color: #bbb;
  font-weight: bold;
  cursor: pointer;
}
#examples_button:hover {
  opacity: 0.6;
}
img.examples_icon {
  height: 18px;
  width: 18px;
  position: relative;
  top: 3px;
}
div.example_row {
  font-size: 14px;
  margin-bottom: 4px;
}
div.example_row a {
  color: #333;
}
div.example_row a:hover {
  color: #0b6;
}
div.examples_heading {
  font-size: 14px;
  margin-bottom: 5px;
  font-weight: bold;
  float: left;
  text-align: left;
  width: 50%;
  color: #666;
}
div.examples_more {
  font-size: 12px;
  font-weight: bold;
  text-align: right;
  width: 100%;
}
div.examples_more a {
  color: #999;
}
div.examples_more a:hover {
  color: #0b6;
}
div.social_div {
  margin-left: 10px;
  margin-right: 20px;
  display: inline;
}
img.menu_icon {
  width: 20px;
  height: 20px;
  position: relative;
  top: 5px;
  margin-right: 5px;
}
a:link.menu_link,
a:visited.menu_link {
  color: #444;
  font-size: 14px;
}
a:hover.menu_link {
  color: #0b6;
}
#main_logo {
  width: 300px;
  height: 76px;
  margin-top: 200px;
  margin-bottom: 0;
  display: block;
}
#cymath_slogan {
  font-size: 18px;
  color: #777;
  margin: 5px 0 40px 0;
}
table.desktop_input_table {
  table-layout: fixed;
  width: 100%;
  box-shadow:
    0 6px 12px rgba(0, 0, 0, 0.02),
    0 6px 12px rgba(0, 0, 0, 0.05);
  margin-bottom: 10px;
}
.feature {
  display: block;
  padding-bottom: 10px;
  font-size: 18px;
  color: #202020;
}
.feature_detail {
  display: inline;
  font-size: 16px;
  text-align: left;
  line-height: 150%;
  color: #505050;
}
.main_page_heading {
  display: block;
  padding-bottom: 20px;
  font-size: 22px;
  text-align: center;
  font-weight: bold;
  margin-bottom: 20px;
  color: #999;
}
.lifted {
  position: relative;
  bottom: 14px;
}
.keyboard_text {
  margin-top: 5px;
  font-size: 12px;
  width: 100%;
}
#keyboard_link {
  cursor: pointer;
}
div.itn {
  display: inline;
  color: #999;
}
div.math_i {
  display: inline;
}
div.math {
  float: left;
}
.pi {
  font-family: Calibri, Serif;
}
.keyboard_button {
  float: left;
  width: 50px;
  height: 30px;
}
div.solution_how_button_base {
  float: right;
  margin-left: 5px;
  display: block;
  font-size: 20px;
  cursor: pointer;
  border-radius: 4px;
  height: 32px;
  width: 32px;
  margin-bottom: 2px;
  border: 1px solid #2ecc71;
  color: #2ecc71;
}
div.solution_how_button_base:hover {
  opacity: 0.6;
}
div.nc_base {
  border-radius: 10px;
  width: 20px;
  height: 20px;
  text-align: center;
  vertical-align: center;
  line-height: 20px;
  font-size: 14px;
  display: inline-block;
  font-weight: bold;
  margin: 6px 0;
  font-family: Arial, sans-serif;
}
div.workspace_base {
  margin-top: 4px;
  margin-left: 0;
  margin-right: 0;
  padding: 8px;
  border-radius: 4px;
  border: 1px solid #ccc;
}
div.nc_check {
  color: #fff;
  background: #777;
}
div.nc_step {
  color: #fff;
  background: #2ecc71;
}
div.workspace_check_answer {
  border: 1px solid #aaa;
  margin-top: 4px;
  padding: 8px;
  width: 100%;
  display: inline-block;
  border-radius: 4px;
}
img.check {
  width: 45px;
  height: 36px;
}
div.done {
  display: inline;
  font-weight: bold;
  color: #0b6;
  margin-right: 5px;
  font-size: 18px;
}
div.done_gray {
  display: inline;
  font-weight: bold;
  color: #666;
  margin-right: 5px;
  font-size: 18px;
}
div.blog_div {
  font-size: 18px;
}
div.contact_div {
  font-size: 18px;
  max-width: 320px;
  width: 296px;
  margin-right: 20px;
  margin-bottom: 20px;
  float: left;
  vertical-align: top;
}
div.example_div {
  width: 300px;
  margin-top: 20px;
  margin-right: 20px;
  margin-bottom: 20px;
  float: left;
}
#header_table {
  width: 100%;
  table-layout: fixed;
  margin-left: auto;
  margin-right: auto;
  margin-top: 0;
  margin-bottom: 0;
  border-spacing: 0;
  border-collapse: separate;
}
.feedback_message {
  padding: 5px;
  margin-right: 2px;
  font-size: 14px;
  width: 400px;
}
div.answer_call_to_action {
  display: block;
  padding-bottom: 10px;
  font-size: 16px;
  color: #666;
  font-weight: bold;
}
.feedback_submit {
  padding: 6px 0;
  cursor: pointer;
  border: 1px solid #0b6;
  font-weight: bold;
  font-size: 14px;
  color: #0b6;
  background-color: #fff;
  margin-top: 2px;
  margin-bottom: 2px;
  margin-left: 5px;
  width: 66px;
  text-align: center;
  border-radius: 4px;
}
#feedback_items {
  white-space: nowrap;
}
.progress {
  margin-left: 5px;
  color: #0b6;
  font-weight: bold;
}
div.general_title {
  color: #977;
  font-size: 15px;
  font-weight: bold;
  display: block;
  margin-bottom: 10px;
}
div.general_msg {
  max-width: 500px;
  color: #666;
  display: block;
  line-height: 150%;
}
div.oops_title {
  color: #977;
  font-size: 15px;
  font-weight: bold;
  display: block;
  margin-bottom: 10px;
}
div.oops_msg {
  max-width: 500px;
  color: #666;
  display: block;
  line-height: 150%;
}
div.clarify {
  margin-bottom: 10px;
}
div.clarify_item {
  display: inline-block;
  font-size: 20px;
  line-height: 175%;
}
div.clarify_item:hover {
  opacity: 0.6;
}
div.suggest_feature {
  color: #999;
}
.webview_footer_text {
  font-size: 12px;
  margin-left: 12px;
  display: inline;
}
.webview_footer_button {
  display: table-cell;
  text-align: center;
  background-color: #999;
  padding: 4px 0;
}
.webview_footer_button_right_divider {
  border-right: solid 1px white;
}
a:link.webview_footer_button,
a:visited.webview_footer_button {
  text-decoration: none;
  color: #fff;
}
.webview_footer_div {
  display: table;
  max-width: 1024px;
  width: 100%;
  margin: 0 auto;
  padding: 0;
  table-layout: fixed;
}
.main_page_hr {
  border-color: #fff;
}
#social_links {
  margin-top: 15px;
}
div.reference_bullet {
  margin-bottom: 10px;
  margin-left: 10px;
}
.instruction {
  display: inline;
}
.color_good {
  color: #0b6;
}
.color_bad {
  color: #f75d59;
}
.step_body {
  display: block;
  margin-top: 20px;
}
.step_heading {
  display: block;
  font-weight: bold;
  margin-bottom: 10px;
}
.step_sub_heading {
  display: block;
  margin-bottom: 5px;
}
div.banner_ad {
  height: 100px;
  width: 100%;
  padding: 4px;
  margin: 16px 0;
  text-align: center;
}
div.prime_factor_num {
  border-bottom: solid 1px black;
  border-left: solid 1px black;
  margin-left: 10px;
  padding: 2px;
  display: inline-block;
}
div.prime_factor_num_last {
  margin-left: 10px;
  display: inline-block;
}
div.prime_factor_row {
  display: block;
  margin: 10px;
  font-size: 20px;
}
div.prime_factor_divisor {
  font-size: 20px;
  display: inline-block;
}
div.numbers_list_title {
  color: #999;
  display: inline;
}
.example_title {
  margin-top: 40px;
  margin-bottom: 20px;
  font-size: 18px;
}
.line_above {
  border-top: solid 1px black;
}
.strike_through {
  position: relative;
}
.strike_through:before {
  position: absolute;
  content: "";
  left: 0;
  top: 50%;
  right: 0;
  border-top: 1px solid;
  border-color: inherit;
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  -o-transform: rotate(-45deg);
  transform: rotate(-45deg);
}
img.title_icon {
  width: 32px;
  height: 32px;
  margin-right: 8px;
  position: relative;
  top: 6px;
}
.border-menu {
  position: relative;
  padding-left: 1.25em;
}
.border-menu:before {
  content: "";
  position: absolute;
  top: 0.4em;
  left: 0;
  width: 0.8em;
  height: 0.125em;
  border-top: 0.375em double #666;
  border-bottom: 0.125em solid #666;
}
#choose_topic_button_desktop {
  cursor: pointer;
  font-size: 18px;
  font-weight: bold;
  text-decoration: none;
  color: #0b6;
  display: inline;
}
#choose_topic_button_desktop:hover {
  opacity: 0.6;
}
img.choose_topic_icon {
  margin-right: 8px;
  position: relative;
  bottom: 2px;
}
div.bullet {
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 15px;
  border-color: transparent transparent transparent #696969;
  display: inline-block;
  margin-right: 8px;
  position: relative;
  top: 2px;
}
#footer_links_div {
  float: left;
  white-space: nowrap;
}
#footer_right_div {
  float: right;
  margin-right: 16px;
}
#footer_social_links {
  font-size: 14px;
  display: inline;
}
div.header_div {
  position: relative;
  display: block;
  max-width: 1024px;
  margin: 0 auto;
  padding: 0 16px;
}
div.header_div_full_width {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
}
.footer_inner_table {
  width: 100%;
  margin: auto;
  padding: 0;
}
.footer_cell {
  background-color: #fff;
  width: 100%;
  margin: 0;
  padding: 0;
}
#social_buttons {
  margin-bottom: 5px;
}
.recent_posts {
  padding-right: 40px;
  white-space: nowrap;
}
img.social_link_icon {
  width: 24px;
  height: 24px;
  margin-right: 10px;
  position: relative;
  top: 2px;
}
img.social_link_icon:hover {
  opacity: 0.5;
}
img.tool_icon {
  opacity: 0.8;
  width: 24px;
  height: 24px;
  position: relative;
  top: 1px;
}
img.tool_icon:hover {
  opacity: 0.5;
}
#follow_us {
  display: inline;
  color: #888;
  font-size: 18px;
}
div.step_answer {
  display: inline;
  color: #0b6;
}
div.disambiguate_div {
  display: table;
  background: #ffff72;
  color: #333;
  border: 1px solid #eee;
  padding: 0 20px;
  margin-bottom: 30px;
}
#question_buttons_div {
  display: none;
  position: absolute;
  max-width: 1024px;
  right: 0;
}
#edit_question_button {
  position: relative;
  top: 24px;
  right: 16px;
  cursor: pointer;
  width: 32px;
  height: 32px;
  margin-left: 16px;
}
#bookmark_button {
  position: relative;
  top: 24px;
  right: 16px;
  cursor: pointer;
  width: 32px;
  height: 32px;
  margin-left: 16px;
}
img.keyboard_icon {
  width: 32px;
  height: 20px;
  position: relative;
  top: 3px;
}
#rate_app_button {
  background: #0b6;
  cursor: pointer;
  opacity: 1;
  border: 1px solid #0b6;
  font-weight: bold;
  font-size: 18px;
  color: #fff;
  width: 180px;
  padding: 8px;
  text-align: center;
  border-radius: 4px;
  display: block;
}
.mobile_padding {
  padding: 0;
}
h2.popular_question_table_row_heading {
  font-size: 18px;
  color: #333;
}
div.step_box {
  display: table;
  color: #333;
  line-height: 175%;
  border: 1px solid #ccc;
  padding: 8px;
  border-radius: 4px;
}
div.solution_why_button {
  float: right;
  top: 0;
  margin-left: 8px;
  display: block;
  font-size: 20px;
  border: 1px solid #72ecac;
  color: #72ecac;
  cursor: pointer;
  border-radius: 16px;
  height: 32px;
  width: 32px;
  line-height: 32px;
  text-align: center;
}
div.solution_why_button:hover {
  opacity: 0.6;
}
div.solution_why_block {
  border: 1px solid #72ecac;
  padding: 8px;
  margin-top: 4px;
  float: left;
  display: none;
  width: 100%;
  border-radius: 4px;
  line-height: 160%;
}
#show_hide_all_whys {
  display: inline;
  font-size: 12px;
  color: #0b6;
  cursor: pointer;
}
div.long_down_arrow {
  background-image: url("/img/long_down_arrow_v2.png");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 20px 90%;
  display: table-cell;
  min-width: 30px;
}
div.pemdas_cell {
  vertical-align: top;
  display: table-cell;
}
div.pemdas_cell > div {
  margin-bottom: 5px;
}
div.reason_highlight {
  display: inline;
  color: #444;
  font-weight: bold;
}
div.reason_strong {
  display: inline;
  color: #72ecac;
  font-weight: bold;
}
p.decimal {
  font-size: 14px;
  color: #666;
}
.no_select {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
.hosted-field {
  height: 50px;
  box-sizing: border-box;
  width: 100%;
  padding: 12px;
  display: inline-block;
  box-shadow: none;
  font-weight: 600;
  font-size: 14px;
  border-radius: 6px;
  border: 1px solid #ddd;
  line-height: 20px;
  background: #fcfcfc;
  margin-bottom: 12px;
  background: linear-gradient(to right, white 50%, #fcfcfc 50%);
  background-size: 200% 100%;
  background-position: right bottom;
  transition: all 300ms ease-in-out;
}
.hosted-fields--label {
  font-size: 14px;
  display: block;
  margin-bottom: 0;
}
.button-container {
  display: block;
  text-align: center;
}
.braintree-hosted-fields-focused {
  border: 1px solid #64d18a;
  border-radius: 1px;
  background-position: left bottom;
}
.braintree-hosted-fields-invalid {
  border: 1px solid #ed574a;
}
.braintree-hosted-fields-valid {
  display: inherit;
}
div.user_input_error_box {
  background-color: #ffe1f0;
  padding: 16px;
  margin-bottom: 20px;
  box-shadow: 0 3px 3px #ccc;
}
div.user_input_error_row {
  font-size: 14px;
}
div.step_text {
  margin-top: 20px;
}
table.overview_table {
  border-spacing: 0;
  border-collapse: separate;
}
td.overview_name {
  font-size: 14px;
  padding: 5px 10px 0 0;
  font-weight: bold;
  color: #999;
  vertical-align: top;
}
td.overview_value {
  font-size: 14px;
  padding: 5px 10px 0 0;
  vertical-align: top;
}
.user_form_textarea {
  width: 360px;
  height: 100px;
  padding: 5px;
  margin: 0;
  font-size: 16px;
}
.feature_request_role {
  width: 200px;
  margin: 0;
  font-size: 16px;
  padding: 5px;
}
div.feature_request_div {
  margin-bottom: 20px;
}
div.feature_request_title {
  color: #999;
  margin-bottom: 5px;
}
input.feature_request_submit {
  padding: 6px 20px;
  cursor: pointer;
  border: 1px solid #0b6;
  font-weight: bold;
  font-size: 16px;
  color: white;
  background-color: #0b6;
  text-align: center;
  border-radius: 5px;
}
div.feature_request_thank_you {
  font-size: 30px;
  margin-bottom: 20px;
  color: #333;
}
div.feature_request_submitted {
  font-size: 20px;
  margin-bottom: 40px;
  color: #666;
}
table.step_table {
  margin-top: 8px;
  border-spacing: 0;
  border-collapse: collapse;
  border: 1px solid #ccc;
}
table.step_table > tbody > tr > td {
  padding: 5px 10px;
  border: 1px solid #ccc;
}
table.step_table > tbody > tr > th {
  padding: 10px 10px;
  background-color: #eee;
  font-weight: normal;
  border: 1px solid #ccc;
}
.large_cell {
  min-width: 140px;
  height: 60px;
  border: 1px solid #ccc;
}
div.factor_pair_found {
  display: inline;
  margin: 0 10px;
  color: #0b6;
  font-size: 14px;
}
div.step_margin {
  margin: 12px 0;
}
div.page_error {
  line-height: 150%;
  margin: 30px 10px;
  font-weight: bold;
  font-size: 18px;
  color: #666;
  text-align: center;
}
div.small_divider {
  margin-bottom: 8px;
}
div.medium_divider {
  margin-bottom: 16px;
}
div.divider {
  margin-bottom: 32px;
}
div.large_divider {
  margin-bottom: 64px;
}
div.tips_div {
  padding-bottom: 40px;
}
div.tips_div > div {
  line-height: 200%;
}
div.tips_divider {
  margin-bottom: 40px;
}
div.tips_strong {
  display: inline;
  color: #0b6;
}
div.tips_heading {
  display: block;
  font-weight: bold;
  color: #333;
  font-size: 24px;
  margin: 0 0 10px 0;
}
div.tips_sub_heading {
  display: block;
  font-weight: bold;
  color: #333;
  font-size: 20px;
  margin: 10px 0 5px 0;
}
div.tips_math {
  display: inline;
  color: #999;
}
div.workspace_marketing_message {
  border-top: solid 1px #ccc;
  padding-top: 5px;
  font-size: 12px;
  color: #aaa;
}
div.marketing_strong {
  display: inline;
  color: #444;
  font-weight: bold;
}
div.cymath_plus_in_text {
  display: inline;
  color: #444;
  font-weight: bold;
}
span.subscription_active {
  color: inherit;
}
span.subscription_suspended {
  color: #ff7f50;
}
span.subscription_canceled {
  color: #ff4500;
}
div.list_item {
  font-size: 16px;
  display: block;
  margin-bottom: 10px;
}
div.cancel_subscription_instruction_div {
  line-height: 200%;
  color: #333;
}
div.subscription_review > div {
  margin-bottom: 8px;
}
div.subscription_review > div > span {
  color: #888;
}
div.subscription_review > div > a {
  color: #333;
}
table.license_cost {
  border: 1px solid #aaa;
  width: 100%;
  border-spacing: 0;
}
table.license_cost > tbody > tr > td {
  white-space: nowrap;
  padding: 5px;
}
tr.license_cost_selected > td {
  background-color: #25b7d3;
  color: #fff;
  font-weight: bold;
}
table.license_cost > tbody > tr > th {
  white-space: nowrap;
  padding: 5px;
  text-align: left;
}
.form_section_heading {
  font-size: 22px;
  color: #999;
  margin-bottom: 20px;
}
.form_item_heading {
  font-size: 16px;
  color: #666;
  font-weight: bold;
  margin: 8px 0;
}
.form_item_help {
  font-size: 12px;
  color: #333;
  margin: 8px 0;
}
img.world {
  opacity: 0.8;
  position: relative;
  top: 6px;
  height: 24px;
  width: 24px;
}
img.loading_animation {
  height: 40px;
  width: 40px;
}
img.expander {
  height: 24px;
  width: 24px;
  margin-top: 3px;
  margin-left: 3px;
}
.tooltip {
  position: relative;
  display: inline-block;
}
.tooltip .tooltip_text {
  visibility: hidden;
  width: 200px;
  background-color: #25b7d3;
  color: #fff;
  text-align: left;
  font-size: 16px;
  font-weight: normal;
  line-height: 150%;
  padding: 15px;
  margin: 5px;
  border-radius: 6px;
  position: absolute;
  z-index: 1;
}
.tooltip .tooltip_text {
  width: 200px;
  bottom: 100%;
  left: 50%;
  margin-left: -100px;
}
.tooltip .tooltip_text::after {
  content: " ";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #25b7d3 transparent transparent transparent;
}
.tooltip:hover .tooltip_text {
  visibility: visible;
}
.bg_with_plus_corner {
  background-image: url("/img/plus_corner.png");
  background-repeat: no-repeat;
  background-position: right top;
  background-size: 100px;
}
span.rule_title {
  font-weight: bold;
  color: #aaa;
}
table.long_op_table {
  border-collapse: collapse;
  border-spacing: 0;
  margin-top: 8px;
  margin-left: 2px;
}
table.long_op_table > tbody > tr > td {
  width: 20px;
  padding: 4px;
  text-align: center;
  font-weight: bold;
  white-space: nowrap;
}
table.long_op_widget {
  border-collapse: collapse;
  border-spacing: 0;
  letter-spacing: 2px;
  margin: 0 auto;
}
table.long_op_widget > tbody > tr > td {
  width: 100%;
  padding: 4px;
  text-align: right;
  font-weight: bold;
  white-space: nowrap;
  color: #999;
}
table.box_method_table {
  border-collapse: collapse;
  border-spacing: 0;
  letter-spacing: 2px;
}
table.box_method_table > tbody > tr > td {
  padding: 16px 8px;
  text-align: center;
  font-weight: bold;
  white-space: nowrap;
}
.border {
  border: 1px solid black;
}
tr.carry td {
  color: #999;
  font-size: smaller;
}
tr.result td {
  color: #0b6;
}
table.matrix {
  margin-top: 10px;
  border-left: 1px solid black;
  border-right: 1px solid black;
  border-spacing: 10px;
  border-collapse: separate;
}
img.math_plot {
  width: 80px;
  height: 80px;
  border: 1px solid #ccc;
  margin-right: 10px;
  margin-top: 10px;
}
div.message_h1 {
  font-size: 22px;
  color: #666;
}
div.message_h2 {
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 2px;
}
div.message_h3 {
  font-size: 12px;
}
.no_spin::-webkit-inner-spin-button,
.no_spin::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
  -moz-appearance: textfield;
}
div.email_shortcut_box {
  display: block;
  margin-left: auto;
  margin-right: 0;
  position: relative;
  background-color: #fff;
  border: 1px solid #ccc;
  border-bottom: 0;
  color: #0b6;
  padding: 3px;
  width: 120px;
  height: 90px;
  bottom: 90px;
  display: none;
}
div.email_shortcut_box > div {
  padding: 3px;
  cursor: pointer;
}
div.email_shortcut_box > div:hover {
  opacity: 0.6;
}
.oauth_google_button {
  color: white;
  background-color: #4285f4;
}
.oauth_facebook_button {
  color: white;
  background-color: #4267b2;
}
img.social_button_logo {
  width: 24px;
  height: 24px;
  float: left;
  margin: 9px 4px;
}
.button {
  transform: perspective(1px) translateZ(0);
  box-shadow: 0 0 1px transparent;
  transition-duration: 0.3s;
  transition-property: color, background-color;
}
.info:focus,
.info:active,
.positive:focus,
.positive:active {
  background-color: #0a5;
  color: white;
}
.info:hover,
.positive:hover {
  background-color: #0a5;
  color: white;
}
.negative:focus,
.negative:active {
  background-color: #999;
  border: 1px solid #999;
  color: white;
}
.negative:hover {
  background-color: #999;
  border: 1px solid #999;
  color: white;
}
.danger:focus,
.danger:active {
  background-color: #b21d16;
  border: 1px solid #b21d16;
  color: white;
}
.danger:hover {
  background-color: #b21d16;
  border: 1px solid #b21d16;
  color: white;
}
.oauth_facebook_button:focus,
.oauth_facebook_button:active {
  background-color: #3257a2;
  color: white;
}
.oauth_facebook_button:hover {
  background-color: #3257a2;
  color: white;
}
.oauth_google_button:focus,
.oauth_google_button:active {
  background-color: #3275e4;
  color: white;
}
.oauth_google_button:hover {
  background-color: #3275e4;
  color: white;
}
div.activation_message {
  font-size: 18px;
  margin-bottom: 20px;
  line-height: 150%;
}
div.ios_legal_box {
  font-size: 12px;
  width: 100%;
  height: 136px;
  overflow: auto;
  background-color: #fff;
  border: 1px #ccc solid;
  padding: 10px;
  scrollbar-base-color: #ff8c00;
  scrollbar-arrow-color: white;
}
div.practice_content {
  font-size: 20px;
  line-height: 200%;
}
.fade {
  position: relative;
}
.fade:after {
  content: " ";
  z-index: 10;
  display: block;
  position: absolute;
  height: 100%;
  top: 0;
  left: 0;
  right: 0;
  background-image: linear-gradient(to bottom, transparent 0, white 80%);
}
div.workspace_preview_div {
  position: absolute;
  z-index: 20;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
div.workspace_preview_button {
  margin: 0 auto;
  margin-top: 8px;
  background: #0b6;
  width: 200px;
  padding: 8px 16px;
  color: white;
  font-size: 16px;
  text-align: center;
  border-radius: 6px;
}
div.workspace_preview_text {
  margin: 0 auto;
  margin-top: 150px;
  font-size: 16px;
  text-align: center;
  font-weight: bold;
  color: #666;
}
div.number_line {
  position: relative;
  display: inline-block;
}
div.number_line:before {
  content: "";
  position: absolute;
  top: 50%;
  border-top: 1px solid #999;
  background: #999;
  width: 100%;
}
div.arrow_right {
  display: inline-block;
  position: relative;
  width: 0;
  height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-left: 8px solid #000;
  top: 1px;
  right: 8px;
}
div.arrow_left {
  display: inline-block;
  position: relative;
  width: 0;
  height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-right: 8px solid #000;
  top: 1px;
}
div.grouping_picture {
  margin: -8px 0;
}
div.grouping_picture > div {
  float: left;
  clear: left;
  margin: 8px 0;
  height: 32px;
  border: 1px dashed #999;
}
div.grouping_picture > div > span {
  background-color: #999;
  width: 16px;
  height: 16px;
  margin: 8px 8px;
  display: inline-block;
}
span.number_line_book_end {
  border-right: 1px solid #000;
  position: relative;
}
div.number_line_base {
  display: inline-block;
  height: 8px;
}
div.number_line_number {
  position: relative;
  text-align: center;
  transform: translate(-50%, 0);
  font-size: 12px;
  color: #999;
}
img.close_x {
  height: 24px;
  width: 24px;
}
div.site_overlay {
  position: fixed;
  height: 100%;
  width: 100%;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.5);
  display: none;
}
div.history_bookmark_list > div {
  margin: 16px 0;
  padding: 16px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  cursor: pointer;
}
div.delete_bookmark_button {
  position: absolute;
  right: 16px;
  display: none;
}
#delete_mode_button {
  margin: 26px 0;
  font-size: 20px;
  cursor: pointer;
}
#delete_mode_button_done {
  display: none;
  cursor: pointer;
}
#delete_mode_button_edit {
  cursor: pointer;
}
img.trash_icon {
  width: 24px;
  height: 24px;
}
@media only screen and (max-height: 1000px) {
  #main_logo {
    margin-top: 160px;
  }
}
@media only screen and (max-height: 800px) {
  #main_logo {
    margin-top: 120px;
  }
}
@media only screen and (max-height: 600px) {
  #main_logo {
    margin-top: 80px;
  }
}
@media only screen and (max-width: 1150px) {
  div.logo_text {
    margin-left: 50px;
  }
}
@media only screen and (max-width: 720px) {
  img.social_link_icon {
    display: none;
  }
}
@media only screen and (max-width: 640px) {
  .language_picker {
    display: none;
  }
}
@media only screen and (max-width: 1024px) {
  div.free_links {
    display: none;
  }
  img.app_download_button {
    display: none;
  }
  #graph_div {
    width: 410px;
    height: 410px;
    min-width: 410px;
    min-height: 410px;
  }
}
@media only screen and (max-width: 478px) {
  #mobile_container {
    background-color: #f1f1f1;
  }
  div.banner_ad {
    height: 54px;
    padding: 0;
    margin: 0;
    margin-top: 16px;
  }
  .feedback_message {
    width: 245px;
  }
  .user_form_textarea {
    width: 300px;
  }
  div.method_choice {
    min-width: 130px;
  }
  div.method_choice_selected {
    min-width: 130px;
  }
  #graph_div {
    width: 370px;
    height: 370px;
    min-width: 370px;
    min-height: 370px;
  }
  div.contact_div {
    width: 240px;
    margin-right: 0;
  }
}
@media only screen and (max-width: 400px) {
  #social_links {
    margin-top: 10px;
    margin-right: 5px;
  }
  img.social_link_icon {
    width: 25px;
    height: 25px;
  }
  .recent_posts {
    display: none;
  }
  #main_logo {
    width: 225px;
    height: 66px;
    margin-top: 50px;
  }
  .topic_title {
    font-size: 14px;
  }
  .topic_body {
    font-size: 12px;
  }
  #header_table {
    border-spacing: 2px;
    border: 0;
  }
  td.ld_line {
    border-bottom: solid 1px black;
    padding-left: 5px;
    padding-right: 5px;
  }
  td.ld_bar {
    border-right: solid 1px black;
    padding-left: 5px;
    padding-right: 5px;
  }
  td.ld {
    padding-left: 5px;
    padding-right: 5px;
  }
  input.url {
    width: 240px;
  }
  #graph_div {
    width: 280px;
    height: 280px;
    min-width: 280px;
    min-height: 280px;
  }
  .feedback_message {
    width: 205px;
  }
  .user_form_textarea {
    width: 238px;
  }
  div.sharing_title {
    font-size: 14px;
  }
  div.answer_call_to_action {
    font-size: 14px;
  }
}