html {
  height: 100%;
}
body {
  height: 100%;
  background-color: #222222;
  color: white;
  text-align: center;
  display: flex;
  flex-direction: column;
  font-size: larger;
  font-family: Roboto, sans-serif;
  margin: 0;
}
main {
  margin: auto;
}
ul {
  list-style: none outside none;
  padding-inline-start: 0;
}
a {
  color: white;
  padding: 0.5em;
}
a:hover {
  background-color: #1d808b;
}