article {
  margin: 100px 0; }

h1 {
  display: none; }

.typical-rwd {
  max-width: 500px;
  margin: 0 auto; }

.second-example p {
  -moz-column-count: 2;
  -webkit-column-count: 2;
  -moz-column-gap: 2em;
  -webkit-column-gap: 2em;
  column-count: 2;
  column-gap: 2em; }

.third-example p {
  -moz-column-width: 200px;
  -webkit-column-width: 200px;
  -moz-column-gap: 2em;
  -webkit-column-gap: 2em;
  column-width: 200px;
  column-gap: 2em; }

.fourth-example {
  -moz-column-width: 200px;
  -webkit-column-width: 200px;
  -moz-column-gap: 2em;
  -webkit-column-gap: 2em;
  -moz-column-rule: 1px solid #444;
  -webkit-column-rule: 1px solid #444;
  column-width: 200px;
  column-gap: 2em;
  column-rule: 1px solid #444; }
  .fourth-example img {
    width: 100%; }