*::selection {
  color: #fff;
  background: rgba(0, 0, 0, 0.8);
}

/* Links */

a {
  border-bottom: 2px solid hsl(0, 0%, 0%, 0.2);
  color: inherit;
  text-decoration: none;
}

a:focus {
  background-color: hsl(0, 0%, 0%, 0.1);
}

a:hover {
  border-color: currentColor;
}

/* Code and quotes*/

pre, blockquote {
  border-left: 4px solid hsl(0, 0%, 0%, 0.7);
  margin-left: 0;
  padding-left: 1.0rem;
}

pre {
  background-color: hsl(0, 0%, 0%, 0.04);
  overflow-x: auto;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

pre > code {
  background-color: unset;
  padding: 0;
}

code {
  font-family: 'Fira Code', monospace;
  background-color: hsl(0, 0%, 0%, 0.04);
  padding: 0.2rem 0.4rem;
}

/* Lists */

ul {
  list-style: square;
}

/* Layout */

html, body {
  scroll-behavior: smooth;
}

header,
footer,
main {
  box-sizing: content-box;
  max-width: 45rem;
  padding: 3% 5%;
}

header ul {
  display: flex;
  flex-wrap: wrap;
  font-size: 1.5rem;
  list-style: none;
  margin: 0;
}

header li {
  margin-bottom: 0;
}

header li::after {
  content: ' / ';
  white-space: pre;
}

header li:last-child::after {
  content: '';
}

footer {
  color: hsl(0, 0%, 0%, 0.6);
}