body {
  margin: 20px auto;
  padding: 20px;
  max-width: 800px;
  line-height: 1.6;
  font-size: 18px;
  color: #444;
  background-color: #d7fcf0;
  font-family: Arial, Helvetica, sans-serif;
}

h1, h2, h3 {
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: limegreen;
}

code {
  background-color: #e8e8e8;
  padding: .2em .4em;
  font-size: 80%;
  border-radius: .2em;
}