body {
  max-width: 50em;
  margin: 4em auto;
  padding: 0 1em;
  line-height: 1.6;
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

a {
  color: #4078c0;
  text-decoration: none;
}
a:hover, a:active {
  text-decoration: underline;
}