box/absolute/iframe-absolute-1.html

<!DOCTYPE HTML>
<title>Absolute positioning and iframe</title>
<style>
iframe {
  display: block;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: green;
}
body {
  background-color: blue;
}
</style>
<iframe></iframe>
1	wakaba	1.1	<!DOCTYPE HTML>
2			<title>Absolute positioning and iframe</title>
3			<style>
4			iframe {
5			display: block;
6			position: absolute;
7			top: 0;
8			bottom: 0;
9			left: 0;
10			right: 0;
11			background-color: green;
12			}
13			body {
14			background-color: blue;
15			}
16			</style>
17			<iframe></iframe>