图片大小设置background-size

	My name is 叶落森

	My name is 叶落森

	My name is 叶落森

	My name is 叶落森

	My name is 叶落森

 

cover案例

body
{
	background:url(img_flwr.gif);
	background-size:cover;
	background-repeat:no-repeat;
}

 

contain案例

body
{
	background:url(img_flwr.gif);
	background-size:contain;
	background-repeat:no-repeat;
}

 

length案例

body
{
	background:url(img_flwr.gif);
	background-size:100px 50px;
	background-repeat:no-repeat;
}

 

percentage案例 

body
{
	background:url(img_flwr.gif);
	background-size:100% 100%;
	background-repeat:no-repeat;
}

 

body
{
	background:url(img_flwr.gif);
	background-size:100% auto;
	background-repeat:no-repeat;
}