title: Open sub menu to hover menu icon
body: <p>I want to open sub menu when i hovered on menu icon with css or javascript.</p>
  <p>Strucutre</p>
  <ul>
      <li>
          
          Icon // hover on this to open sub menu
          Text
          
          //sub menu with addition layer on menu.
          <ul>
              <li>
                  
                  Text
                  
              </li>
          </ul>
      </li>
  </ul>