.demo-expansion-width {
  width: 600px;
  display: block;
}

.demo-expansion-code {
  background: #d3d3d3;
  display: block;
  height: 10em;
  overflow: auto;
  padding: 0 5px;
  width: 400px;

  pre {
    margin: 0.25em 0;
  }
}