style.css

body {
  font-family: "Merriweather Sans", "Benton Sans", "Helvetica Neue", helvetica,
    arial, sans-serif;
  font-size: 1.2em;
  margin: 2em;
}

h2 {
  margin-top: 2em;
  margin-bottom: 1em;
}

main,
footer {
  max-width: 960px;
  margin: 0 auto;
}

.site-footer {
  margin-top: 4em;
  border-top: 1px solid gray;
  padding-top: 2em;
}

blockquote {
  /* Courtesy of css-tricks.com. */
  background: #f9f9f9;
  border-left: 10px solid #ccc;
  margin: 2em auto 3em;
  padding: 0.5em 1em 1em 0;
  quotes: "\201C""\201D""\2018""\2019";
}

blockquote:before {
  color: #ccc;
  content: "“";
  font-size: 4em;
  line-height: 0.1em;
  margin-right: 0.25em;
  vertical-align: -0.4em;
}

blockquote p,
blockquote footer {
  line-height: 1.5em;
  padding: 0 40px;
}

blockquote footer {
  font-size: 0.9em;
  margin-bottom: 1em;
}

iframe {
  display: block;
  margin: 0 auto;
}

textarea.code {
  width: 100%;
  min-height: 3em;
  padding: 1em;
  font-family: monospace;
  font-size: 1.2em;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #121212;
    color: #ffffff;
  }

  blockquote {
    /* Courtesy of css-tricks.com. */
    background: #282828;
    border-left: 10px solid #3f3f3f;
  }

  textarea {
    background: #282828;
    color: #ffffff;
  }

  a {
    color: #8b8b8b;
  }
  a:hover {
    color: #575757;
  }
}