.zone-landing .column-5 {
  width: 48.5%;
}
.zone {
  background-color: #0952a8;
  background-image: url("/static/img/mdn10/head.png"), url("/static/img/blueprint.png"), linear-gradient(to bottom, #153985, #044ca2 600px);
  background-repeat: no-repeat, repeat, repeat-x;
  background-position: center -37px;
}
.zone.zone-landing {
  background-position: center -6px;
}
@media all and (min-width: 481px) and (max-width: 768px) {
  .zone {
    background-image: url("/static/img/blueprint.png"), linear-gradient(to bottom, #153985, #044ca2 600px);
    background-repeat: repeat, repeat-x;
  }
}
@media all and (min-width: 769px) {
  .zone-landing .masthead-text p {
    font-size: 48px;
    font-size: 3.429rem;
    letter-spacing: -2px;
    margin-bottom: 20px;
    font-family: 'Open Sans Light', 'Helvetica', Arial, sans-serif;
    font-weight: 200;
    line-height: 1.2;
  }
}
@media all and (min-width: 1025px) {
  .zone-landing h1 {
    display: none;
  }
  .zone-landing .zone-landing-header-preview {
    margin-top: 250px;
  }
  .zone-landing .column-5 {
    margin-top: -180px;
    margin-bottom: 110px;
    text-align: center;
  }
}
.contributor-avatars {
  display: none;
}
.promo10 {
  margin-bottom: 20px;
  padding: 20px;
  background-color: #00539f;
  color: #fff;
  text-align: center;
  font-family: 'Open Sans Light', 'Helvetica', Arial, sans-serif;
  font-size: 20px;
}
html[data-ffo-opensanslight="false"]:not(.no-js) .promo10 {
  font-family: 'Helvetica', Arial, sans-serif;
  font-weight: 200;
}
.promo10-globe {
  background: #00539f center -30% no-repeat url("/static/img/mdn10/globe.png");
}
.promo10-img {
  display: inline-block;
  vertical-align: top;
  padding: 0 20px 20px;
}
.promo10-text {
  display: inline-block;
  width: 300px;
  max-width: 100%;
}
.quote {
  margin-bottom: 20px;
  padding: 20px;
  border: 1px solid #5b88c6;
  color: #00539f;
  text-align: center;
}
.quote blockquote {
  position: relative;
  border: none;
  padding: 0;
  background-color: inherit;
  font-family: 'Open Sans Light', 'Helvetica', Arial, sans-serif;
  font-style: italic;
  font-size: 20px;
}
html[data-ffo-opensanslight="false"]:not(.no-js) .quote blockquote {
  font-family: 'Helvetica', Arial, sans-serif;
}
.quote blockquote:before,
.quote blockquote:after {
  position: static;
  color: #00539f;
  font-size: 2rem;
  font-family: sans-serif;
  line-height: 0.5;
}
.quote blockquote:before {
  content: "“ ";
}
.quote blockquote:after {
  content: " ”";
}
.learnmore {
  display: inline-block;
  padding: 6px 12px;
  background-color: #0095dd;
  color: #fff;
}
.learnmore a {
  color: #fff;
}
.learnmore span {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
}
.chapters {
  position: relative;
  overflow: hidden;
  clear: both;
}
.chapters:after {
  content: ' ';
  clear: both;
  display: table;
}
.chapter {
  position: relative;
  float: left;
  margin: 10px 0;
  padding: 20px;
  background-color: #f4f7f8;
  border: 2px solid transparent;
/* highlight for :target match */
}
.chapter:target {
  border-color: #eaeff2;
}
.chapter:target:nth-child(odd):before {
  border-left-color: #eaeff2;
}
.chapter:target:nth-child(even):before {
  border-right-color: #eaeff2;
}
.chapter h2 {
  -moz-hyphens: none;
  -webkit-hyphens: none;
  -ms-hyphens: none;
  hyphens: none;
}
.chapter h2 small {
  display: block;
  margin: 12px 0;
  font-size: 18px;
  font-size: 1.286rem;
  font-family: 'Open Sans Light', 'Helvetica', Arial, sans-serif;
  font-weight: 200;
  line-height: 1;
  letter-spacing: -0.014em;
}
html[data-ffo-opensans="false"]:not(.no-js) .chapter h2 small {
  font-family: 'Helvetica', Arial, sans-serif;
  line-height: 1;
  letter-spacing: -0.044em;
  word-spacing: 0.22em;
}
.chapter-audio iframe + div {
  display: none;
}
.chapter-portrait h2 {
  margin-top: 10px;
}
.chapter-portrait-img {
  line-height: 0;
  display: inline-block;
  border-radius: 3px;
  height: 128px;
  width: 128px;
  float: none;
  margin-right: 20px;
}
.chapter-portrait-img img {
  border-radius: 3px;
}
@media all and (min-width: 481px) {
  .chapters:before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 20px;
    background-color: #eaeff2;
  }
  .chapter {
    margin: 10px 0 10px 60px;
/* arrow */
/* dot on timeline */
  }
  .chapter:before {
    content: '';
    position: absolute;
    top: 20px;
    left: -20px;
    border: 20px solid #f4f7f8;
    border-top-color: transparent;
    border-bottom-color: transparent;
    border-left: none;
  }
  .chapter:after {
    content: '';
    position: absolute;
    top: 30px;
    left: -62px;
    background-color: #000;
    border: 10px solid #000;
    border-radius: 100%;
  }
  .chapter-portrait-img {
    float: left;
    margin-right: 10px;
  }
}
@media all and (min-width: 769px) {
  .chapters {
    padding-top: 120px;
  }
  .chapters:before {
    left: 50%;
    margin-left: -10px;
  }
  .chapter {
    width: 40%;
    width: calc(50% - 102px);
    float: right;
    margin: 10px 0 120px 0;
/* every other chapter is on left side of timeline */
/* arrow */
/* dot */
  }
  .chapter:nth-child(odd) {
    float: left;
    clear: both;
    margin-top: -120px;
    margin-bottom: 140px;
  }
  .chapter:nth-child(odd):before {
    left: auto;
    right: -20px;
    border: 20px solid #f4f7f8;
    border-top-color: transparent;
    border-bottom-color: transparent;
    border-right: none;
  }
  .chapter:after {
    left: -70px;
  }
  .chapter:nth-child(odd):after {
    left: auto;
    right: -70px;
  }
}