* { box-sizing: border-box; }
body {
  max-width: 44rem;
  margin: 0 auto;
  padding: 1rem;
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  color: #24292f;
}
a { color: #0969da; text-decoration: none; }
a:hover { text-decoration: underline; }
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid #d0d7de;
  margin-bottom: 2rem;
  padding-bottom: .5rem;
}
.site-title { font-weight: 700; font-size: 1.25rem; color: #24292f; }
.site-header nav a { margin-left: 1rem; }
.post-list { list-style: none; padding: 0; }
.post-list li { padding: .35rem 0; }
.post-date { color: #57606a; margin-right: .75rem; font-variant-numeric: tabular-nums; }
.post-tags .tag { margin-left: .4rem; font-size: .85rem; }
.post-meta { color: #57606a; }
.site-footer {
  margin-top: 3rem;
  border-top: 1px solid #d0d7de;
  padding-top: .5rem;
  color: #57606a;
  font-size: .85rem;
}
.post-nav { display: flex; justify-content: space-between; margin-top: 2rem; }
pre { background: #f6f8fa; padding: .75rem; overflow-x: auto; border-radius: 6px; }
code { background: #f6f8fa; padding: .15rem .3rem; border-radius: 4px; }
pre code { background: none; padding: 0; }
img { max-width: 100%; }