body {margin:0;padding:0;} .mask{width:10em;height:20em;background:url(../images/640-1136/main_bg.jpg) no-repeat; background-size:cover;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;overflow:hidden;} .logo{margin:0 auto;padding:0;padding-top:19.03%;padding-bottom:38%;width:36.09%;height:17%;text-align:center;} .logoImg{width:100%;height:100%;} .item{margin:0 auto;padding:0;width:100%;height:100%;/*width:21.9375em;height:11em;*/} ul{margin:0 auto;padding:0;width:86.72%;height:17.17%;list-style:none;} li.ico{float:left;margin:0 auto;margin-bottom:10%;padding:0;/*padding-bottom:3.5%;*/width:23.42%;height:74.87%;display:block;} li.division{float:left;margin:0 auto;padding:0;/*padding-bottom:3.5%;*/width:2.4%;height:74.87%;} .icoImg{width:100%;height:100%;} .icoImgNoneHyperlink{width:100%;height:127.5%;} .btnLink{border:0px #fff solid;display:block;}