完美解决手机网页大背景不能铺完整个屏幕的超级代码

1. [代码][PHP]代码    

html,body{min-height:100%;}
body{background-image:url(bg_640.jpg);background-size:cover;babackground-repeat:no-repeat;}
.main{padding-top:141%;text-align:center;}
.main a img{width:40%;}
.padd{padding-left:5%;}