.container {
  max-width: 960px;
  margin: auto;
  padding: 20px;
  line-height: 1.6;
}
main h1 {
  font-size: 28px;
  margin-bottom: 10px;
}
main h2 {
  font-size: 20px;
  margin-top: 20px;
}
main ul {
  padding-left: 20px;
}