600x400" alt="" width="600" height="400">
            </li>
            <li>
              <img src="https://source.unsplash.com/collection/1891993/600x400" alt="" width="600" height="400">
            </li>
          </ul>
          <ul class="controls" id="customize-controls">
            <li class="prev">
              <img src="images/angle-left.png" alt="">
            </li>
            <li class="next">
              <img src="images/angle-right.png" alt="">
            </li>
          </ul>
         