.container {
  margin: 0 auto;
  width: 89%;
}
nav, footer {
  background-color: #333;
  color: #fff;
  text-align: center;
}
nav {
  display: flex;
  flex-direction: column;
}
footer li, footer ul {
  display: inline;
  margin: 0;
  padding: 0;
}
footer li::after {
  content: " | "
}
nav > a, footer a {
  flex: 1;
  text-align: center;
  text-decoration: none;
  color: #fff;
}

/* Blog post section */
a.tag {
  background-color: #ddd;
  color: #333;
  display: inline-block;
  padding: 0.1em;
  font-size: 0.9em;
  text-decoration: none;
}
.pagination {
  display: flex;
  justify-content: space-between;
  list-style: none;
  margin: 1em auto;
  padding: 0;
}
.pagination > .page-item {
  border: 1px solid #ddd;
  flex: 1;
  text-align: center;
  width: 5em;
}
.pagination .page-link {
  display: block;
  color: #000;
  text-decoration: none;
}
.pagination > .page-item.active {
  background-color: #333;
}
.pagination > .page-item.active > .page-link {
  color: #fff;
}
.pagination > .page-item.disabled > .page-link {
  color: #ddd;
}

/* Project section */
.project-container {
  display: flex;
  flex-direction: column-reverse;
}
/* flex behaviour */
.project-container img {max-width: 100%; height: auto; }
@media only screen and (min-width: 768px) {
  nav { flex-direction: row; }
  .project-container {
    flex-direction: row;
    column-gap: 1.5em;
  }
  .pagination { width: 30%; }
}
.oss {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.oss article {
  border: 1px solid #ddd;
  box-shadow: 3px 3px 3px #ddd;
  margin: 0.5%;
  padding: 0.5%;
  width: 30%;
}

blockquote {
  font-weight: bolder;
}
.footnotes {
  font-size: 11px;
}
pre {
  overflow: auto;
}
code[data-lang]::before {
  content: attr(data-lang);
  display: block;
  font-weight: bold;
}
abbr {
  cursor: pointer;
}