body {
  max-width: 45em;
  margin-left: auto;
  margin-right: auto;
  margin-top: 7em;
  margin-bottom: 6em;
}

h1, h2, h3, h4, h5, h6 {
  font-style: italic;
  margin-bottom: 0;
  margin-top: 0;
  }

.menu {
  position: fixed;
  top: 0;
  max-width: 45em;
  background: white;
  }

.footer {
  position: fixed;
  bottom: 0;
  max-width: 45em;
  background: white;
  }