html,body{min-height:100%;} ============優化================ html{min-height:100%;} 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:cen

html,body{min-height:100%;}

============優化================

html{min-height:100%;}

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%;}

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