@media only screen and (max-width:320px){.announcemain{width:320px;margin:0 auto;margin-bottom:20px}.announcebox{width:38%;height:200px;float:left;border:solid 1px}}@media only screen and (min-device-width:768px) and (max-device-width:1024px) and (orientation:portrait){.announcemain{width:768px;margin:0 auto;margin-bottom:20px}.announcebox{width:33%;height:200px;float:left;border:solid 1px}}@media only screen and (min-width:1224px){.announcemain{width:95%;height:200px;margin:0 auto;padding:20px}.announcebox{width:24%;height:50px;float:left;text-align:center;line-height:1;border:solid 1px;border-color:#fff;padding-top:10px}}.adinfo{padding:5px!important}.card{width:572px;height:374px;position:relative;display:inline-block}.card .img-top{display:none;position:absolute;top:0;left:0;z-index:99}.card:hover .img-top{display:inline}.covers{width:300px;margin-right:20px;margin-bottom:20px;text-align:center;float:left}