<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
#toggle {
height: 30px;
position: relative;
z-index: 2;
}
#toggle a {
position: absolute;
}
#box {
overflow: hidden;
max-height: 0;
opacity: 0;
-webkit-transition: all .4s ease-out;
-moz-transition: all .4s ease-out;
transition: all .4s ease-out;
}
#slidebox:target #box {
max-height: 100px;
opacity: 1;
}
#slidebox:target .top {
opacity: 0;
pointer-events: none;
}
body {
max-width: 600px;
margin: 0 auto;
}
</style>
</head>
<body id="slidebox">
<div id="toggle">
<a class="bot" href="#">Click to view the hidden content</a>
<a class="top" href="#slidebox">Click to view the hidden content</a>
</div>
<div id="box">
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Vivamus magna. Cras in mi at felis aliquet congue. Donec eu libero
sit amet quam egestas semper. Aenean ultricies mi vitae est. Mauris
placerat eleifend leo.</p>
</div>
<p>Pellentesque habitant morbi tristique senectus et netus et
malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat
vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet
quam egestas semper. Aenean ultricies mi vitae est. Mauris placerat
eleifend leo.</p>
</body>
</html>
【element_relation】
