body{margin:0;padding:0}body,html{height:100%}.main{height:100%;text-align:center}.main .top{height:8%}.main .cen{width:642px;max-width:90%;display:inline-block;vertical-align:middle}.main .cen .logo img{width:270px;max-width:100%}.main .cen .ins{padding:0 10px;width:600px;max-width:calc(100% - 10px * 2);margin:1em auto 0}.main .cen .ins .bd form .in{display:inline-block;border:1px solid #ccc;border-right:0;width:calc(100% - 6em - 1px)}.main .cen .ins .bd form .in input{font-size:16px;padding:0 8px;outline:0;border:0;line-height:32px;width:calc(100% - 8px * 2)}.main .cen .ins .bd form .but{font-size:16px;background:#2D78F4;color:#fff;border:0;line-height:32px;width:6em;outline:0;cursor:pointer}.main .cen .ins .list{text-align:left;font-size:14px}.main .cen .ins .list .item{border-left:1px solid #ccc;border-right:1px solid #ccc;padding:4px;cursor:pointer}.main .cen .ins .list .item:last-child{border-bottom:1px solid #ccc}.main .cen .ins .list .item.on,.main .cen .ins .list .item:hover{background:#EDEDED}