body {
  margin: 40px auto;
  max-width: 650px;
  line-height: 1.4;
  font-size: 18px;
  color: #444;
  padding: 0 10px;
}

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

a:link,
a:visited {
  color: #00f;
  text-decoration: underline;
}

a:hover {
  color: #444;
  text-decoration: underline;
}