html {
  max-width: 70ch;
  padding: 3em 1em;
  margin: auto;
  line-height: 1.75;
  font-size: 1.25em;
}

body {
  background-color: #fefefe;
}

h1 {
  text-align: center;
}

ul {
  margin: 0;
  display: grid;
  row-gap: calc(16 / 16 * 1rem);
  padding-left: 0;
  list-style-type: none;
}