docs/themes/learn/static/css/nucleus.css

*, *::before, *::after {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box; }

@-webkit-viewport {
  width: device-width; }
@-moz-viewport {
  width: device-width; }
@-ms-viewport {
  width: device-width; }
@-o-viewport {
  width: device-width; }
@viewport {
  width: device-width; }
html {
  font-size: 100%;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%; }

body {
  margin: 0; }

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
nav,
section,
summary {
  display: block; }

audio,
canvas,
progress,
video {
  display: inline-block;
  vertical-align: baseline; }

audio:not([controls]) {
  display: none;
  height: 0; }

[hidden],
template {
  display: none; }

a {
  background: transparent;
  text-decoration: none; }

a:active,
a:hover {
  outline: 0; }

abbr[title] {
  border-bottom: 1px dotted; }

b,
strong {
  font-weight: bold; }

dfn {
  font-style: italic; }

mark {
  background: #FFFF27;
  color: #333; }

sub,
sup {
  font-size: 0.8rem;
  line-height: 0;
  position: relative;
  vertical-align: baseline; }

sup {
  top: -0.5em; }

sub {
  bottom: -0.25em; }

img {
  border: 0;
  max-width: 100%; }

svg:not(:root) {
  overflow: hidden; }

figure {
  margin: 1em 40px; }

hr {
  height: 0; }

pre {
  overflow: auto; }

button,
input,
optgroup,
select,
textarea {
  color: inherit;
  font: inherit;
  margin: 0; }

button {
  overflow: visible; }

button,
select {
  text-transform: none; }

button,
html input[type="button"],
input[type="reset"],
input[type="submit"] {
  -webkit-appearance: button;
  cursor: pointer; }

button[disabled],
html input[disabled] {
  cursor: default; }

button::-moz-focus-inner,
input::-moz-focus-inner {
  border: 0;
  padding: 0; }

input {
  line-height: normal; }

input[type="checkbox"],
input[type="radio"] {
  padding: 0; }

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  height: auto; }

input[type="search"] {
  -webkit-appearance: textfield; }

input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none; }

legend {
  border: 0;
  padding: 0; }

textarea {
  overflow: auto; }

optgroup {
  font-weight: bold; }

table {
  border-collapse: collapse;
  border-spacing: 0;
  table-layout: fixed;
  width: 100%; }

tr, td, th {
  vertical-align: middle; }

th, td {
  padding: 0.425rem 0; }

th {
  text-align: left; }

.container {
  width: 75em;
  margin: 0 auto;
  padding: 0; }
  @media only all and (min-width: 60em) and (max-width: 74.938em) {
    .container {
      width: 60em; } }
  @media only all and (min-width: 48em) and (max-width: 59.938em) {
    .container {
      width: 48em; } }
  @media only all and (min-width: 30.063em) and (max-width: 47.938em) {
    .container {
      width: 30em; } }
  @media only all and (max-width: 30em) {
    .container {
      width: 100%; } }

.grid {
  display: -webkit-box;
  display: -moz-box;
  display: box;
  display: -webkit-flex;
  display: -moz-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-flow: row;
  -moz-flex-flow: row;
  flex-flow: row;
  list-style: none;
  margin: 0;
  padding: 0; }
  @media only all and (max-width: 47.938em) {
    .grid {
      -webkit-flex-flow: row wrap;
      -moz-flex-flow: row wrap;
      flex-flow: row wrap; } }

.block {
  -webkit-box-flex: 1;
  -moz-box-flex: 1;
  box-flex: 1;
  -webkit-flex: 1;
  -moz-flex: 1;
  -ms-flex: 1;
  flex: 1;
  min-width: 0;
  min-height: 0; }
  @media only all and (max-width: 47.938em) {
    .block {
      -webkit-box-flex: 0;
      -moz-box-flex: 0;
      box-flex: 0;
      -webkit-flex: 0 100%;
      -moz-flex: 0 100%;
      -ms-flex: 0 100%;
      flex: 0 100%; } }

.content {
  margin: 0.625rem;
  padding: 0.938rem; }

@media only all and (max-width: 47.938em) {
  body [class*="size-"] {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 100%;
    -moz-flex: 0 100%;
    -ms-flex: 0 100%;
    flex: 0 100%; } }

.size-1-2 {
  -webkit-box-flex: 0;
  -moz-box-flex: 0;
  box-flex: 0;
  -webkit-flex: 0 50%;
  -moz-flex: 0 50%;
  -ms-flex: 0 50%;
  flex: 0 50%; }

.size-1-3 {
  -webkit-box-flex: 0;
  -moz-box-flex: 0;
  box-flex: 0;
  -webkit-flex: 0 33.33333%;
  -moz-flex: 0 33.33333%;
  -ms-flex: 0 33.33333%;
  flex: 0 33.33333%; }

.size-1-4 {
  -webkit-box-flex: 0;
  -moz-box-flex: 0;
  box-flex: 0;
  -webkit-flex: 0 25%;
  -moz-flex: 0 25%;
  -ms-flex: 0 25%;
  flex: 0 25%; }

.size-1-5 {
  -webkit-box-flex: 0;
  -moz-box-flex: 0;
  box-flex: 0;
  -webkit-flex: 0 20%;
  -moz-flex: 0 20%;
  -ms-flex: 0 20%;
  flex: 0 20%; }

.size-1-6 {
  -webkit-box-flex: 0;
  -moz-box-flex: 0;
  box-flex: 0;
  -webkit-flex: 0 16.66667%;
  -moz-flex: 0 16.66667%;
  -ms-flex: 0 16.66667%;
  flex: 0 16.66667%; }

.size-1-7 {
  -webkit-box-flex: 0;
  -moz-box-flex: 0;
  box-flex: 0;
  -webkit-flex: 0 14.28571%;
  -moz-flex: 0 14.28571%;
  -ms-flex: 0 14.28571%;
  flex: 0 14.28571%; }

.size-1-8 {
  -webkit-box-flex: 0;
  -moz-box-flex: 0;
  box-flex: 0;
  -webkit-flex: 0 12.5%;
  -moz-flex: 0 12.5%;
  -ms-flex: 0 12.5%;
  flex: 0 12.5%; }

.size-1-9 {
  -webkit-box-flex: 0;
  -moz-box-flex: 0;
  box-flex: 0;
  -webkit-flex: 0 11.11111%;
  -moz-flex: 0 11.11111%;
  -ms-flex: 0 11.11111%;
  flex: 0 11.11111%; }

.size-1-10 {
  -webkit-box-flex: 0;
  -moz-box-flex: 0;
  box-flex: 0;
  -webkit-flex: 0 10%;
  -moz-flex: 0 10%;
  -ms-flex: 0 10%;
  flex: 0 10%; }

.size-1-11 {
  -webkit-box-flex: 0;
  -moz-box-flex: 0;
  box-flex: 0;
  -webkit-flex: 0 9.09091%;
  -moz-flex: 0 9.09091%;
  -ms-flex: 0 9.09091%;
  flex: 0 9.09091%; }

.size-1-12 {
  -webkit-box-flex: 0;
  -moz-box-flex: 0;
  box-flex: 0;
  -webkit-flex: 0 8.33333%;
  -moz-flex: 0 8.33333%;
  -ms-flex: 0 8.33333%;
  flex: 0 8.33333%; }

@media only all and (min-width: 48em) and (max-width: 59.938em) {
  .size-tablet-1-2 {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 50%;
    -moz-flex: 0 50%;
    -ms-flex: 0 50%;
    flex: 0 50%; }

  .size-tablet-1-3 {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 33.33333%;
    -moz-flex: 0 33.33333%;
    -ms-flex: 0 33.33333%;
    flex: 0 33.33333%; }

  .size-tablet-1-4 {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 25%;
    -moz-flex: 0 25%;
    -ms-flex: 0 25%;
    flex: 0 25%; }

  .size-tablet-1-5 {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 20%;
    -moz-flex: 0 20%;
    -ms-flex: 0 20%;
    flex: 0 20%; }

  .size-tablet-1-6 {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 16.66667%;
    -moz-flex: 0 16.66667%;
    -ms-flex: 0 16.66667%;
    flex: 0 16.66667%; }

  .size-tablet-1-7 {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 14.28571%;
    -moz-flex: 0 14.28571%;
    -ms-flex: 0 14.28571%;
    flex: 0 14.28571%; }

  .size-tablet-1-8 {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 12.5%;
    -moz-flex: 0 12.5%;
    -ms-flex: 0 12.5%;
    flex: 0 12.5%; }

  .size-tablet-1-9 {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 11.11111%;
    -moz-flex: 0 11.11111%;
    -ms-flex: 0 11.11111%;
    flex: 0 11.11111%; }

  .size-tablet-1-10 {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 10%;
    -moz-flex: 0 10%;
    -ms-flex: 0 10%;
    flex: 0 10%; }

  .size-tablet-1-11 {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 9.09091%;
    -moz-flex: 0 9.09091%;
    -ms-flex: 0 9.09091%;
    flex: 0 9.09091%; }

  .size-tablet-1-12 {
    -webkit-box-flex: 0;
    -moz-box-flex: 0;
    box-flex: 0;
    -webkit-flex: 0 8.33333%;
    -moz-flex: 0 8.33333%;
    -ms-flex: 0 8.33333%;
    flex: 0 8.33333%; } }
@media only all and (max-width: 47.938em) {
  @supports not (flex-wrap: wrap) {
    .grid {
      display: block;
      -webkit-box-lines: inherit;
      -moz-box-lines: inherit;
      box-lines: inherit;
      -webkit-flex-wrap: inherit;
      -moz-flex-wrap: inherit;
      -ms-flex-wrap: inherit;
      flex-wrap: inherit; }

    .block {
      display: block;
      -webkit-box-flex: inherit;
      -moz-box-flex: inherit;
      box-flex: inherit;
      -webkit-flex: inherit;
      -moz-flex: inherit;
      -ms-flex: inherit;
      flex: inherit; } } }
.first-block {
  -webkit-box-ordinal-group: 0;
  -webkit-order: -1;
  -ms-flex-order: -1;
  order: -1; }

.last-block {
  -webkit-box-ordinal-group: 2;
  -webkit-order: 1;
  -ms-flex-order: 1;
  order: 1; }

.fixed-blocks {
  -webkit-flex-flow: row wrap;
  -moz-flex-flow: row wrap;
  flex-flow: row wrap; }
  .fixed-blocks .block {
    -webkit-box-flex: inherit;
    -moz-box-flex: inherit;
    box-flex: inherit;
    -webkit-flex: inherit;
    -moz-flex: inherit;
    -ms-flex: inherit;
    flex: inherit;
    width: 25%; }
    @media only all and (min-width: 60em) and (max-width: 74.938em) {
      .fixed-blocks .block {
        width: 33.33333%; } }
    @media only all and (min-width: 48em) and (max-width: 59.938em) {
      .fixed-blocks .block {
        width: 50%; } }
    @media only all and (max-width: 47.938em) {
      .fixed-blocks .block {
        width: 100%; } }

body {
  font-size: 1.05rem;
  line-height: 1.7; }

h1, h2, h3, h4, h5, h6 {
  margin: 0.85rem 0 1.7rem 0;
  text-rendering: optimizeLegibility; }

h1 {
  font-size: 3.25rem; }

h2 {
  font-size: 2.55rem; }

h3 {
  font-size: 2.15rem; }

h4 {
  font-size: 1.8rem; }

h5 {
  font-size: 1.4rem; }

h6 {
  font-size: 0.9rem; }

p {
  margin: 1.7rem 0; }

ul, ol {
  margin-top: 1.7rem;
  margin-bottom: 1.7rem; }
  ul ul, ul ol, ol ul, ol ol {
    margin-top: 0;
    margin-bottom: 0; }

blockquote {
  margin: 1.7rem 0;
  padding-left: 0.85rem; }

cite {
  display: block;
  font-size: 0.925rem; }
  cite:before {
    content: "\2014 \0020"; }

pre {
  margin: 1.7rem 0;
  padding: 0.938rem; }

code {
  vertical-align: bottom; }

small {
  font-size: 0.925rem; }

hr {
  border-left: none;
  border-right: none;
  border-top: none;
  margin: 1.7rem 0; }

fieldset {
  border: 0;
  padding: 0.938rem;
  margin: 0 0 1.7rem 0; }

input,
label,
select {
  display: block; }

label {
  margin-bottom: 0.425rem; }
  label.required:after {
    content: "*"; }
  label abbr {
    display: none; }

textarea, input[type="email"], input[type="number"], input[type="password"], input[type="search"], input[type="tel"], input[type="text"], input[type="url"], input[type="color"], input[type="date"], input[type="datetime"], input[type="datetime-local"], input[type="month"], input[type="time"], input[type="week"], select[multiple=multiple] {
  -webkit-transition: border-color;
  -moz-transition: border-color;
  transition: border-color;
  border-radius: 0.1875rem;
  margin-bottom: 0.85rem;
  padding: 0.425rem 0.425rem;
  width: 100%; }
  textarea:focus, input[type="email"]:focus, input[type="number"]:focus, input[type="password"]:focus, input[type="search"]:focus, input[type="tel"]:focus, input[type="text"]:focus, input[type="url"]:focus, input[type="color"]:focus, input[type="date"]:focus, input[type="datetime"]:focus, input[type="datetime-local"]:focus, input[type="month"]:focus, input[type="time"]:focus, input[type="week"]:focus, select[multiple=multiple]:focus {
    outline: none; }

textarea {
  resize: vertical; }

input[type="checkbox"], input[type="radio"] {
  display: inline;
  margin-right: 0.425rem; }

input[type="file"] {
  width: 100%; }

select {
  width: auto;
  max-width: 100%;
  margin-bottom: 1.7rem; }

button,
input[type="submit"] {
  cursor: pointer;
  user-select: none;
  vertical-align: middle;
  white-space: nowrap;
  border: inherit; }