body {
  max-width: 700px;
  margin: auto;
  font-size: 20px;
  line-height: 1.5;
  font-family: "PT Serif", serif;
  background-color: #fff;
  padding: 20px;
}
#masthead h1 a {
    color: black;
}
h2 {
  font-size: 1.2em;
}
a {
  text-decoration: none;
  color: #20b;
}
a:hover {
  text-decoration: underline;
}