sp.css

body {
  color: #333;
  font-family: helvetica, arial, sans-serif;
  line-height: 1.5;
  margin: 0 auto;
  max-width: 40em;
  padding: 0 1em;
}
h1, h2, h3, h4, h5, h6 {
  margin: 1.25em 0 0.5em 0;
  line-height: 1.2;
}
a:link {
  color: #00e;
}
a:visited {
  color: #518;
}
a:focus, a:hover {
  color: #03f;
}
a:active {
  color: #e00;
}
h1 a:empty:before, h2 a:empty:before, h3 a:empty:before,
h4 a:empty:before, h5 a:empty:before, h6 a:empty:before {
  content: "#";
}
h1 a:empty, h2 a:empty, h3 a:empty, h4 a:empty, h5 a:empty, h6 a:empty {
  visibility: hidden;
  padding-left: 0.25em;
}
h1:hover a:empty, h2:hover a:empty, h3:hover a:empty,
h4:hover a:empty, h5:hover a:empty, h6:hover a:empty {
  visibility: visible;
}
img {
  max-width: 100%;
}
figure {
  margin: 1em 0;
  text-align: center;
}
figcaption {
  font-size: small;
}
pre, code, samp, kbd {
  font-family: monospace, monospace;
}
pre, code, kbd {
  color: #050;
}
samp {
  color: #730;
}
pre, blockquote {
  background: #eee;
  padding: 0.5em;
}
pre {
  overflow: auto;
}
blockquote {
  border-left: medium solid #ccc;
  margin: 1em 0;
}
blockquote :first-child {
  margin-top: 0;
}
blockquote :last-child {
  margin-bottom: 0;
}
table {
  border-collapse: collapse;
}
th, td {
  border: thin solid #999;
  padding: 0.3em 0.4em;
  text-align: left;
}
@media (prefers-color-scheme: dark) {
  body {
    background: #111;
    color: #bbb;
  }
  a:link {
    color: #9bf;
  }
  a:visited {
    color: #caf;
  }
  a:focus, a:hover {
    color: #9cf;
  }
  a:active {
    color: #f99;
  }
  pre, code, kbd {
    color: #9c6;
    font-family: monospace, monospace;
  }
  samp {
    color: #db0;
  }
  pre, blockquote {
    background: #000;
  }
  blockquote {
    border-color: #333;
  }
  th, td {
    border-color: #666;
  }
}