body {
  font-family: sans-serif;
  line-height: 1.6;
  margin: 2em;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  background-color: #fdfdfd;
  color: #333;
}
h1, h2, h3 {
  color: #500;
}
a {
  color: #0056b3;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
ul {
  list-style-type: none;
  padding-left: 0;
}
li {
  margin-bottom: 0.5em;
}
hr {
  border: 0;
  height: 1px;
  background: #ccc;
}