body,a,p {
  font-family: Optima, Verdana, sans-serif;
  text-align: justify;
  text-decoration: none;
}

iframe {
  margin-left: -2em;
}

body {
  width: 46em;
  line-height: 1.5;
  margin-left: 2em;
}

h1,h2,h3 {
  font-family: sans-serif;
}

pre {
  margin-left: 3em;
}