Comment by judofyr

Might as well use inline styling to accomplish the same (without adding tons of CSS):

    <div class="bar-chart">
      <ul>
        <li style="height:99%">99%</li>
        <li style="height:50%">50%</li>
        <li style="height:30%">30%</li>
        <li style="height:90%">90%</li>
        <li style="height:10%">10%</li>
        <li style="height:70%">70%</li>
        <li style="height:30%">30%</li>
        <li style="height:90%">90%</li>
      </ul>
    </div>