cssSandbox/hover/index.html at master · levonlee/cssSandbox · GitHub

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<!doctype html>
<html lang="en">
<head>
  <!-- Required meta tags -->
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

  <!-- Bootstrap CSS -->
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">

  <title>Hover</title>
</head>
<body>
<h1>Hover</h1>

<h2>Example 1</h2>
<ul>
  <li><code>ul li:position:relative</code>, <code>ul li a div:position:absolute</code></li>
  <li>CSS parent:hover is active when any child elements of the parent is mouseover and the child element is not display:none</li>
</ul>

<ul class="lili-ex lili-ex-1">
  <li>
    <a>
      <img src="http://via.placeholder.com/300x250/?text=300x250x1" class="item-leading-img" alt="." width="300" height="250">
      <div>
        <p>Hover Text #1</p>
        <p><img src="http://via.placeholder.com/20x20/?text=20x20" alt="" width="20" height="20"></p>
      </div>
    </a>
    <p>Can't have more than 1 <code>div:position:absolute</code> as grand children in parent <code>li:position:relative</code></p>
    <div class="form-group">
<textarea readonly rows="5" class="form-control">
<a>
  <img src="http://via.placeholder.com/300x250/?text=300x250x2" alt="" width="300" height="250">
  <div>
    <p>Hover Text #2</p>
  </div>
</a>
</textarea>
    </div>
  </li>

  <li>
    <a>
      <img src="http://via.placeholder.com/300x250/?text=300x250x1" class="item-leading-img" alt="." width="300" height="250">
      <div class="overlay">
        <div class="overlay-img"></div>
      </div>
    </a>
  </li>
</ul>

<h2>Example 2</h2>
<p>Multiple div:position:absolute as grand children in parent:position:relative</p>
<p>Instead of toggling Hover Text divs opacity, toggle display.</p>

<ul class="lili-ex lili-ex-2">
  <li>
    <a>
      <img src="http://via.placeholder.com/300x250/?text=300x250x1" class="item-leading-img" alt="." width="300" height="250">
      <div>
        <p>Hover Text #1</p>
      </div>
    </a>
    <a>
      <img src="http://via.placeholder.com/300x250/?text=300x250x2" class="item-leading-img" alt="" width="300" height="250">
      <div>
        <p>Hover Text #2</p>
      </div>
    </a>
  </li>
</ul>

<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<style>
  ul.lili-ex{
    list-style:none;
    margin:0;
    padding:0;
  }
  .lili-ex li {
    max-width:50%;
    cursor:pointer;
    position:relative;
  }
  .item-leading-img{
    width:100%;
    height:auto;
  }
  .lili-ex-1 li a div {
    position:absolute;
    left:0; top:0; right:0; bottom:0;
    background-color: red;
    text-align: center;
    width: 100%;
    color: #000;
    font-size: .85em;
    padding: 0 .5em;
    margin: 0;
    opacity: 0;
  }
  .lili-ex-1 li a:hover div {
    opacity: 1;
  }
  .lili-ex-1 li a div.overlay {
    opacity: 1;
    background-color:transparent;
  }
  .lili-ex-1 li a div.overlay div.overlay-img{
    /* Begin vertical and horizontal center */
    margin: auto;
    position: absolute;
    top: 0; left: 0; bottom: 0; right: 0;
    /* End vertical and horizontal center */

    opacity: 1;

    width:60px;
    height:60px;
    background:url('http://via.placeholder.com/60x60/000000/ffffff/?text=60x60') no-repeat;
  }
  .lili-ex-1 li a:hover div.overlay div.overlay-img{
    background:url('http://via.placeholder.com/60x60/ffffff/000000/?text=60x60') no-repeat;
  }
  .lili-ex-2 li a div{
    position:absolute;
    left:0;
    top:0;
    right:0;
    bottom:0;
    background-color: red;
    text-align: center;
    width: 100%;
    color: #000;
    font-size: .85em;
    padding: 0 .5em;
    margin: 0;
    display: none;
  }
  .lili-ex-2 li a:nth-child(2) div{
    background-color: blue;
  }
  .lili-ex-2 li a:hover div {
    display:block;
  }
</style>
<script>

</script>
</body>
</html>