body
{
	width: 100%;
	height: 100%;
}

#container
{
	width: 100%;
	height: 100%;
	position: relative;
}

header.common_header
{
	width: 900px;
	margin: 0 auto;
	text-align: center;
	background-color: blue;
}
.contents
{
	position: absolute;
	height: auto;
	bottom: 10px;
	width: 100%;
	top: 70px;
}

.contents > iframe
{
	width: 100%;
	height: 100%;
	border: none;
}