body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  max-width: 720px;
  margin: 2em auto;
  padding: 0 1em;
  color: #222;
  line-height: 1.55;
}
header h1 { margin-bottom: 0.2em; }
.tagline { color: #777; margin-top: 0; }
article { border-top: 1px solid #eee; padding: 1.2em 0; }
article h2 { margin: 0 0 0.2em; font-size: 1.25em; }
article h2 a { color: #2a4d8f; text-decoration: none; }
article h2 a:hover { text-decoration: underline; }
article time { color: #999; font-size: 0.9em; }
article p { margin: 0.6em 0 0; }
footer { margin-top: 3em; color: #aaa; font-size: 0.85em; text-align: center; }