最终样式
.bank_img1{background: url("../images/pay/bank_list.png") no-repeat 0px -0px;}
.bank_img2{background: url("../images/pay/bank_list.png") no-repeat 0px -40px;}
.bank_img3{background: url("../images/pay/bank_list.png") no-repeat 0px -80px;}
class每次 +1
no-repeat 0px -80px; 每次-40px
共有15次
怎么用lESS 写出来