.curricula {
  padding-top: 0; }

header {
  background-color: #333333; }

h1 {
  font-size: 3.75rem;
  margin: 0; }

section {
  padding: 20px 0; }

#intro {
  padding-top: 100px; }

.icon-inv-time, .icon-inv-threshold, .icon-inv-video, .icon-inv-gallery, .icon-video, .icon-gallery, .icon-image, .icon-profile, .icon-infographic, .icon-activity, .icon-quiz {
  display: inline-block;
  width: 24px;
  height: 24px;
  margin: 0 8px 0 0;
  overflow: hidden;
  vertical-align: -7px;
  background-image: url(../images/chapter-icon-sprite.png);
  background-repeat: no-repeat; }

.icon-inv-time {
  background-position: 0 0; }

.icon-inv-threshold {
  background-position: -24px 0; }

.icon-inv-video {
  background-position: -48px 0; }

.icon-inv-gallery {
  background-position: -72px 0; }

.icon-video {
  background-position: -48px -24px; }

.icon-gallery {
  background-position: -72px -24px; }

.icon-image {
  background-position: -96px -24px; }

.icon-profile {
  background-position: -120px -24px; }

.icon-infographic {
  background-position: -144px -24px; }

.icon-activity {
  background-position: -168px -24px; }

.icon-quiz {
  background-position: -192px -24px; }

.legend {
  border: solid 1px #666666;
  padding: 18px 20px;
  text-align: center;
  font-size: 0; }
  .legend:after {
    display: block;
    clear: both;
    content: ""; }
  .legend .label {
    display: inline-block;
    width: 120px;
    padding: 2px 0;
    white-space: nowrap;
    text-align: left;
    font-size: 0.875rem; }

.chapter-card {
  position: relative; }
  .chapter-card img {
    width: 100%; }
  .chapter-card .overlay {
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    padding: 24px;
    color: white;
    text-decoration: none; }
    .chapter-card .overlay .number {
      margin-bottom: 10px;
      font-size: 1.25rem;
      font-family: 'Roboto', sans-serif;
      text-transform: uppercase; }
    .chapter-card .overlay h2 {
      font-size: 3rem;
      margin: 0; }
    .chapter-card .overlay .glance {
      position: absolute;
      left: 24px;
      bottom: 20px; }
      .chapter-card .overlay .glance .label {
        display: inline-block;
        width: 130px;
        padding: 4px 0;
        white-space: nowrap; }

.chapter-outline {
  display: table;
  margin: 20px 0 30px;
  width: 100%; }
  .chapter-outline .section {
    display: table-row; }
    .chapter-outline .section .title {
      padding: 10px 0 4px 0;
      font-size: 1.25rem; }
      .chapter-outline .section .title a {
        display: inline-block;
        min-height: 24px;
        color: #333333;
        text-decoration: none; }
        .chapter-outline .section .title a:hover {
          text-decoration: underline; }
    .chapter-outline .section .icons {
      display: table-cell;
      padding: 4px 24px 4px 0;
      white-space: nowrap;
      text-align: right;
      font-size: 0; }
      .chapter-outline .section .icons span {
        margin: 0 0 0 16px; }

@media screen and (max-width: 1200px) {
  .chapter-card .overlay h2 {
    font-size: 2rem; } }
@media screen and (max-width: 900px) {
  .row .stack3 {
    width: 100%;
    margin-right: 0; }

  .chapter-card .overlay h2 {
    font-size: 3rem; } }
@media screen and (max-width: 600px) {
  .chapter-card .overlay h2 {
    font-size: 2rem; } }
@media screen and (max-width: 440px) {
  .chapter-card .overlay {
    padding: 14px; }
    .chapter-card .overlay .glance {
      display: none; }

  .chapter-outline {
    margin: 10px 0 20px; }
    .chapter-outline .section .title {
      padding-left: 14px; }
    .chapter-outline .section .icons {
      padding-right: 14px; }
      .chapter-outline .section .icons span {
        margin-left: 8px; } }

ol li {
  line-height: 160%; }