HTML Element Style How to - Hover to show sub UL li

Question

We would like to know how to hover to show sub UL li.

Answer


<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
ul, li {<!--from  ww  w. j  ava2 s .  c  o  m-->
  list-style: none;
  margin: 0;
  padding: 0;
  color: #fff;
}

li {
  background-color: red;
}

ul#root>li {
  background-color: blue;
  display: inline-block;
  position: relative
}

ul#root>li>ul {
  position: absolute;
  display: none;
  border-top: 10px solid rgba(255, 0, 0, 0);
}

ul#root>li:hover>ul {
  position: absolute;
  display: block;
}
</style>
</head>
<body>
  <ul id="root">
    <li>Item 1
      <ul>
        <li>Subitem 1</li>
      </ul>
    </li>
    <li>Item 2
      <ul>
        <li>Subitem 2</li>
      </ul>
    </li>
  </ul>
</body>
</html>

The code above is rendered as follows: