t: 300;
    border-bottom: 1px solid #fff;
    margin-bottom: .5em;
  }
  h1:after {
    content: "";
    display: block;
    width: 100%;
    height: 1px;
    background-color: #ddd;
  }
  h2 {
    font-size: 19px;
    font-weight: 400;
  }
  h3 {
    font-size: 15px;
    font-weight: 400;
    margin: 0 0 .3em;
  }
  p {
    margin: 0 0 2em;
  }
  p + h2 {
    margin-top: 2em;
  }
  html {
    background: #f5f5f5;
    height: 100%;
  }
  code {
    background-color: white;
    border: 1px solid #ccc;
    p