html, * {
  font-family: sans-serif;
}
body {
  font-size: 1rem;
  margin: 0 auto;
  max-width: 800px;
  padding: 40px;
  line-height: 1.5rem;
}

a {
  background-color: yellow;
  border: 2px solid yellow;
  padding: 4px;
  color: black;
  text-underline-offset: 2px;
}
a[target='_blank']::after {
  content: '(\2197)'
}

hr {
  border: none;
  border-top: 2px solid yellow;
}

code {
  font-family: monospace;
  border-radius: 4px;
  background-color: lightgray;
  padding: 2px 4px;
}