.comjc-activity{position:fixed;bottom:0;z-index:999;width:100%}.comjc-activity .comjc-expand{background-image:url(../img/netjc-pic1.png);background-repeat:no-repeat;background-position-x:center;height:103px;background-size:cover;background-position-y:bottom}.comjc-activity .comjc-expand .comjc-expand-alink{position:absolute;left:0;right:0;top:0;bottom:0}.comjc-activity .comjc-expand .expand-close{width:1200px;margin:0 auto;position:relative;height:100%}.comjc-activity .comjc-expand .expand-close .expand-close-icon{display:inline-block;width:19px;height:19px;background:url(../img/comjc-close.png) no-repeat;background-size:100% 100%;position:absolute;top:12px;right:0;z-index:100;cursor:pointer}@media screen and (max-width:1200px){.comjc-activity .comjc-expand{background-size:contain}.comjc-activity .comjc-expand .expand-close{width:100%}}@media screen and (max-width:1200px) and (min-width:768px){.comjc-activity .comjc-expand .expand-close .expand-close-icon{top:40px}}@media screen and (max-width:500px){.comjc-activity .comjc-expand .expand-close .expand-close-icon{top:50px}}