html {
  font-size: 18px;
  padding:0;
}

body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: #555;
  padding:0;
}

a {
  text-decoration:none;
  color:#465CA2;
}

header, footer, section {
  padding: 0 20px;
}

article, .content {
  max-width: 650px;
  margin: 0 auto;
}

.clearfix:before {
  display: table;
  content: "";
}

.clearfix:after {
  display: table;
  clear: both;
  content: "";
}

header {
  background: #2A2C2E;
  overflow:hidden;
  padding-top:12px;
  padding-bottom:12px;
}

header a {
  display:inline-block;
  color:#fff;
  text-decoration: none;
}

header a:hover {
  opacity:0.7;
}

header h2 a {
  text-indent: 100%;
  overflow: hidden;
  white-space: nowrap;
  width: 181px;
  height: 23px;
  background: url(/National_Library/20160930123623oe_/http://githubengineering.com/images/logo.png);
  background-size: 100%;
  background-repeat: no-repeat;
  float: left;
  margin-bottom: -4px;
}

header ul {
  float: right;
  margin-top:-4px;
  margin-bottom:-10px;
  font-size: 20px;
  line-height:21px;
}

header li {
  float:left;
  margin:0 0 0 16px;
}

em {
  font-style: italic;
}

a.twitter-logo {
  width:20px;
  height:20px;
  margin-top:3px;
  background: url(/National_Library/20160930123623oe_/http://githubengineering.com/images/twitter.png);
  background-size:16px;
  background-repeat: no-repeat;
  background-position:center;
}

article, .callout .content {
  padding:40px 0;
}

article + article {
  padding-top:0;
}

.callout {
  background:#ccc;
  margin:0 -20px;
  padding:0 20px;
  background: #345d9f;
  background: -moz-linear-gradient(top, #345d9f 0%, #4D5CA4 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#345d9f), color-stop(100%,#4D5CA4));
  background: -webkit-linear-gradient(top, #345d9f 0%,#4D5CA4 100%);
  background: -o-linear-gradient(top, #345d9f 0%,#4D5CA4 100%);
  background: -ms-linear-gradient(top, #345d9f 0%,#4D5CA4 100%);
  background: linear-gradient(to bottom, #345d9f 0%,#4D5CA4 100%);
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#345d9f', endColorstr='#4D5CA4',GradientType=0 );
}

.callout .meta a {
  color:#fff;
}

.callout .meta a:hover {
  color:#B7BFD6;
}

h1 {
  font-size:37px;
  line-height:1.1;
  font-weight:300;
  margin-top:-6px;
}

h1 a {
  color:#222;
  text-decoration:none;
}

h1 a:hover {
  color:#465CA2;
}

.not-found-container {
  margin: 50px auto 40px auto;
  width: 600px;
  text-align: center;
}

.callout h1 a {
  color:#fff;
}

.callout h1 a:hover {
  color:#B7BFD6;
}

.meta {
  font-size:85%;
  vertical-align:middle;
  color:#989898;
  margin-top:8px;
}
.meta a {
  color:#222;
}

.meta a:hover {
  color:#465CA2;
}

.post-date {
  white-space:nowrap;
}

.post-date .octicon {
  margin-left:12px;
  margin-right: 3px;
  display: inline-block;
  width: 16px;
  vertical-align: top;
}

.post-author-role {

}

.post-author-image {
  margin-left:12px;
  margin-right:2px;
}

.post-author-image:first-child {
  margin-left: 0px;
}

.post-author-image img {
  width:20px;
  height:20px;
  border-radius:3px;
  vertical-align: middle;
  position:relative;
  top: -2px;
}

.post-author-image.new-row {
  margin-left: 0px;
}

.separator {
  display: block;
  margin-top: 5px;
}

.callout .meta {
  color:#B7BFD6;
}

.callout .markdown-body {
  color:#DDE3F5;
}

.markdown-body {
  margin-top:18px;
}

.markdown-body a {
  text-decoration: underline;
}

.markdown-body a:hover {
  text-decoration:none;
}

.callout .markdown-body a {
  color:#fff;
}

.markdown-body:first-child {
  margin-top:40px;
  padding-bottom:40px;
}

.markdown-body a.anchorjs-link {
  text-decoration: none;
}

code {
  font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace;
  font-size: 12px;
}

footer {
  border-top:1px solid #ededed;
  padding:40px 20px;
  text-align: center;
  font-size:13px;
  color:#989898;
}

footer p {
  margin-bottom:12px;
}

footer .octicon {
  font-size:16px;
}

.made-with-love {
  font-size:16px;
  line-height:1.5;
}

.made-with-love .octicon-logo-github {
  position:relative;
  top: 1px;
}

.button {
  display:inline-block;
  font-weight:500;
  padding:0 20px;
  border-radius:4px;
  height:36px;
  line-height:34px;
  border:1px solid #e2e2e2;
  font-size:13px;
  text-overflow:ellipsis;
  white-space: nowrap;
  text-align:left;
  box-sizing: border-box;
}

.button-previous:before {
  content:'←';
  position:relative;
  top:-1px;
  margin-right:8px;
}

.button-next:after {
  content:'→';
  position:relative;
  top:-1px;
  margin-left:8px;
}

.button:hover {
  color:#555;
}

.button-disabled {
  opacity:0.4;
}

.button-disabled:hover {
  color:inherit;
}

.pagination {
  line-height:36px;
  text-align:center;
  overflow:hidden;
  margin-bottom:40px;
}

.pagination .button {
  max-width:45%;
  overflow:hidden;
}

.pagination p.date {
  line-height:36px;
}

.pagination .button-previous {
  float:left;
}

.pagination .button-next {
  float:right;
}

@media print, screen and (max-width: 560px) {
  body {
    font-size:15px;
  }

  h1 {
    font-size:24px;
    font-weight:400;
    margin-bottom:6px;
  }

  .meta {
    font-size:15px;
  }

  .post-date {
    margin-left: -10px;
  }

  .post-date .octicon {
    font-size:16px;
    width:16px;
    margin-right:6px;
  }

  .post-author-image img {
    width:16px;
    height:16px;
  }

  article, .callout .content {
    padding:20px 0;
  }

  .markdown-body:first-child {
    margin-top:20px;
    padding-bottom:20px;
  }

  footer {
    padding:20px 20px 0;
  }

  .pagination {
    margin-bottom: 20px;
  }

  .pagination .button {
    box-sizing:border-box;
    text-align:center;
    float:none;
    margin-bottom:20px;
    display:block;
    max-width:100%;
  }

  .pagination .button-disabled {
    display:none;
  }
}


.author-bio {
  padding: 30px 0;
  margin-bottom: 20px;
  border-top: 1px solid #ededed;
}

.bio-author-image img {
  border-radius: 3px;
  width: 60px;
  height: 60px;
  float: left;
}

.bio-author-who,
.bio-author-bio,
.bio-author-links {
  display: block;
  margin-left: 80px;
}

.bio-author-name {
  font-size: 21px;
  font-weight: bold;
  margin-right: 6px;
}

.bio-author-who {
  margin-bottom: 20px;
}

.bio-author-bio {
  font-size: 15px;
  margin-bottom: 20px;
}

.bio-author-links a {
  font-size: 13px;
  border-right: 1px solid #a6a6a6;
  padding-right: 5px;
  margin-right: 5px;
  display: inline-block;
}

.bio-author-links a:last-child {
  border-right: 0;
}