.comp-web-backtop{width:100%;height:0px;position:fixed;z-index:10;left:0;bottom:224px;font-size:12px}.comp-web-backtop .comp-web-bt-width .backtop-btn{cursor:pointer;background:url(../images/back_top.png) no-repeat center top;background-size:60px 60px;padding-top:50px;line-height:30px;float:right;text-align:center;color:#d6dbe0}.comp-web-backtop .comp-web-bt-width .backtop-btn:hover{color:#87898b}

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