styles.css

html {
  font-family: sans-serif;
  background-color: #a60000;
}

body {
  margin: 0 auto;
  width: 80%;
  max-width: 800px;
}

header, article, aside, footer {
  background-color: white;
  padding: 20px;
  margin: 20px 0;
}

header, footer {
  background-color: #ddd;
}

li, p {
  font-size: 1.1rem;
  line-height: 1.5;
}