box/absolute/iframe-absolute-2.html

<!DOCTYPE HTML>
<title>Absolute positioning and iframe</title>
<style>
iframe {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-style: none;
  background-color: green;
}
body {
  background-color: blue;
}
</style>
<iframe></iframe>
1	<!DOCTYPE HTML>
2	<title>Absolute positioning and iframe</title>
3	<style>
4	iframe {
5	display: block;
6	position: absolute;
7	top: 0;
8	left: 0;
9	width: 100%;
10	height: 100%;
11	border-style: none;
12	background-color: green;
13	}
14	body {
15	background-color: blue;
16	}
17	</style>
18	<iframe></iframe>