.pic-box{position:relative;padding-top:55.57%;overflow:hidden;}
.pic-bg{position:absolute;width:100%;height:100%;top:0;right:0;left:0;bottom:0;transition:all .3s;}
.pic-box:hover .pic-bg{transform:scale(1.1);}
.dzxx>li>a .pic-box{padding-top:70.44%;}
.sect2-r ul li a .pic-box{
padding-top:65%;}