:root {
  --link-tab-bg-color: #303030;
  --link-tab-bg-hover-color: #004080;
}

* {
  font-family: 'Open Sans', sans-serif; 
}

.centered {
  margin-left: auto;
  margin-right: auto;
}

.header {
  min-width: 716px;
  margin-top: 17px;
  text-align: center;
  font: 21px Arial;
  border-bottom: 5px solid var(--link-tab-bg-color);
  padding-bottom: 10px;
}

.link-tab {
  font-weight: normal;
  padding: 10px;
  color: white;
  background-color: var(--link-tab-bg-color);
  text-decoration: none;
}

.link-tab:hover {
  background-color: var(--link-tab-bg-hover-color);
}

.footer {
  min-width: 716px;
  text-align: center;
  line-height: 39px;
  border-top: 5px solid var(--link-tab-bg-color);
}

a {
  text-decoration: none;
  font-weight: bold;
  color: #004080;
}

article {
  min-width: 716px;
  margin: 0;
  overflow: auto;
}

@media (min-width: 760px) {
  article {
    margin-left: 5%;
    margin-right: 5%;
  }
}

@media (min-width: 960px) {
  article {
    margin-left: 10%;
    margin-right: 10%;
  }
}

@media (min-width: 1100px) {
  article {
    margin-left: 15%;
    margin-right: 15%;
  }
}

@media (min-width: 1300px) {
  article {
    margin-left: 20%;
    margin-right: 20%;
  }
}

@media (min-width: 1560px) {
  article {
    margin-left: 25%;
    margin-right: 25%;
  }
}

/* The following CSS is a modified version of sindresorhus's github-markdown-css repo: https://github.com/sindresorhus/github-markdown-css */

code,
pre {
  font-family: monospace,monospace;
  font-size: 1em;
}

code {
  padding: .2em .4em;
  margin: 0;
  font-size: 85%;
  background-color: rgba(27,31,35,.05);
  border-radius: 3px;
}

pre > code {
  padding: 0;
  margin: 0;
  font-size: 100%;
  word-break: normal;
  white-space: pre;
  background: transparent;
  border: 0;
}

pre code {
  display: inline;
  max-width: auto;
  padding: 0;
  margin: 0;
  overflow: visible;
  line-height: inherit;
  word-wrap: normal;
  background-color: initial;
  border: 0;
}

pre {
  padding: 16px;
  overflow: auto;
  font-size: 85%;
  line-height: 1.45;
  background-color: #f6f8fa;
  border-radius: 3px;
  margin: 0;
  word-break: normal;
  word-wrap: normal;
}

article > table {
  line-height: 25px;
  border-spacing: 0;
  border-collapse: collapse;
  margin-top: 10px;
  margin-bottom: 10px;
  width: 100%;
  overflow: auto;
}

article > table th {
  font-weight: 600;
}

article > table td,
article > table th {
  padding: 6px 13px;
  border: 1px solid #dfe2e5;
}

article > table tr {
  background-color: #fff;
  border-top: 1px solid #c6cbd1;
}

article > table tr:nth-child(2n) {
  background-color: #f6f8fa;
}

blockquote {
  margin: 0;
  margin-top: 0;
  margin-bottom: 16px;
  padding: 0 1em;
  color: #6a737d;
  border-left: .25em solid #dfe2e5;
}

blockquote > :first-child {
  margin-top: 0;
}

blockquote > :last-child {
  margin-bottom: 0;
}