es to number of selectors and declarations.
    </p>
    <ol>
      <li><a href="./01-original/index.html">Original (control)</a></li>
      <li><a href="./02-base/index.html">Base class</a></li>
      <li><a href="./03-extend/index.html">Extend</a></li>
      <li><a href="./04-placeholder/index.html">Extend with placeholder</a></li>
    </ol>
    <p>
      <a href="https://github.com/mdo/css-output/">View results and details on GitHub.</a>
    </p>
    <p>
      Created by <a href="https://twitter.com/mdo"