style.css

body {
  font-family: sans-serif;
  text-align: center;
  padding-left: 20%;
  padding-right: 20%;
}
P {
  text-align: justify;
}
P.center {
  text-align: center;
}
li {
  padding-bottom: 10px;
  text-align: justify;
}
table td {
  vertical-align: top;
}
table li {
  text-align: left;
}
table.center {
  margin-left:auto;
  margin-right:auto;
}
.cite {
  font-size: 70%;
}
.right .github-fork-ribbon {
    background-color: black;
}

/* https://github.com/sindresorhus/github-markdown-css/issues/6 */
.octicon {
    line-height: 1;
    display: inline-block;
    text-decoration: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
.octicon-link:before { content: '#'; }

.octicon-link {
    display: none;
    color: #000;
    vertical-align: top;
}
h1:hover .anchor,
h2:hover .anchor,
h3:hover .anchor,
h4:hover .anchor,
h5:hover .anchor,
h6:hover .anchor {
    height: 1em;
    padding-left: 8px;
    margin-top: 5px;
    margin-left: -28px;
    line-height: 1;
    text-decoration: none;
}
h1:hover .octicon-link,
h2:hover .octicon-link,
h3:hover .octicon-link,
h4:hover .octicon-link,
h5:hover .octicon-link,
h6:hover .octicon-link {
    display: inline-block;
}