  </section>
      <section id="examples">
        <h2>Examples</h2>
        <div id="background-examples">
          <h3>Background Classes</h3>
          <dl class="flex-row justify-content-space-between">
            <div class="flex-column align-items-center margin-right-2">
              <dt><code>background-black</code></dt>
              <dd
                class="background-black margin-left-0"
                style="height: 50px; width: 50px"
              ></dd>
            </div>
            <div