.wide-enough {
  max-width: 400px;
}
.wider {
  max-width: 600px;
}
/* "Header link" becomes blue inside of <hN><a>Header link</a></hN> otherwise. */
h1 a,
h2 a,
h3 a,
h4 a,
h5 a,
h6 a {
  color: inherit;
}
/* Link captions become too close to badges on the sidebar. */
span.badge {
  margin-left: .5em;
}