img#home {
  float: right;
  margin-bottom: 1em;
}

div#content {
  clear: both;
}

div#footer {
  font-size: 80%;
  margin-top: 2em;
  padding-top: 1em;
  border-top: 1px solid #000000;
  clear: both;
}

img#valid-css, img#valid-xhtml {
  margin-left: 1em;
  margin-right: 1em;
}

pre.command {
  font-size: 90%;
  padding: 1em 1em 1em 1em;
  border: 1px solid #000000;
}

a:link img, a:visited img {
  border-style: none;
}