main {
  margin: auto;
  padding: 0;
  background-color: white;
}

main nav {
  background-color: white;
  text-transform: uppercase;

  position: sticky;
  position: -webkit-sticky;
  top: 3em;

  height: 3em;
  line-height: 3em;
  z-index: 9;

  border-bottom: 1px solid #eee;
}

main nav a {
  font-size: 13px;
  color: #666;
  margin-bottom: 0em;
}

main nav a:hover {
  color: #888;
}

@media (max-width: 1000px) {
  main {
    width: 100%;
  }

  main nav {
    width: 100%;
  }
}