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<!DOCTYPE html>
<html>
<head>
<style>
div.relative {
    position: relative;
    width: 400px;
    height: 200px;
    border: 3px solid #8AC007;
}

div.absolute {
    position: absolute;
    top: 80px;
    width: 200px;
    height: 100px;
    border: 3px solid #8AC007;
} 
</style>
</head>
<body>

<div class="relative">This div element has position: relative;
  <div class="absolute">This div element has position: absolute. It is placed 80 pixels below the top edge of the  containing positioned element (div with class="relative").</div>
</div>

</body>
</html>