html, body {
   margin: 0;
   padding: 0;
   font-family: sans-serif;
   background-color: white;
   color: black;
}
body {
   margin: auto;
   margin-left: 13em;
   max-width: 80%;
   padding: 1em;
   background-color: black;
   border: 1px solid black;
   color: #ccc;
}
body > blockquote {
   margin: 0;
   margin-bottom: 1em;
   margin-left: -13em;
}
   body > blockquote > p.vcard {
      float: left;
      margin: 0;
      margin-right: 0.5em;
      color: black;
      font-weight: bold;
   }
   body > blockquote p {
      margin-left: 13em;
   }
      body > blockquote > p.vcard > cite {
         font-style: normal;
      }
h1, h2, h3, h4, ul {
   color: black;
   background-color: white;
   margin-left: -2em;
   margin-bottom: 0;
   margin-top: 0;
}