m</code>, <code>hide-md</code>, <code>hide-lg</code> and <code>hide-xl</code> available.</p>
            <ul>
              <li><code>hide-xs</code> hides elements when the window width is smaller than or equal to <strong>480px</strong>.</li>
              <li><code>hide-sm</code> hides elements when the window width is smaller than or equal to <strong>600px</strong>.</li>
              <li><code>hide-md</code> hides elements when the window width is smaller than or equal to <strong>840px</strong>.</li>
   