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<!DOCTYPE html>
<html>
<head>
<style>
div.a {
  position: relative;
  width: 400px;
  height: 200px;
  border: 3px solid red;
}
div.b {
  position: absolute;
  right: -20px;
  width: 100px;
  height: 120px;
  border: 3px solid blue;
} 
div.c {
  position: absolute;
  right: 150px;
  width: 200px;
  height: 120px;
  border: 3px solid green;
} 
</style>
</head>
<body>
<h1>The right Property</h1>
<div class="a">This div element has position: relative;
  <div class="b">This div element has position: absolute and right: -20px.</div>
</div>
<div class="c">This div element has no parent element, has position: absolute and is placed 150 pixels to the left of the right edge of the document body.</div>
</body>
</html>