.open_left{display:none}.active_left{display:none}.open_right{display:block;background-image:url(../images/btn_share.png);background-repeat:no-repeat;background-position:0 0;height:38px;width:38px;padding:0;position:absolute;top:20px;right:25px;margin:0;text-indent:100%;white-space:nowrap;overflow:hidden;cursor:pointer}.active_right{display:block;background-image:url(../images/btn_share.png);background-repeat:no-repeat;background-position:0 0;height:38px;width:38px;padding:0;position:absolute;top:20px;right:25px;margin:0;text-indent:100%;z-index:99999;white-space:nowrap;overflow:hidden;cursor:pointer}@media screen and (max-width: 768px){.open_left{display:block;background-image:url(../images/menu.png);background-repeat:no-repeat;background-position:0 0;height:37px;width:29px;padding:0;position:absolute;top:20px;left:25px;margin:0;text-indent:100%;white-space:nowrap;overflow:hidden;cursor:pointer}.active_left{display:block;background-image:url(../images/close.png);background-repeat:no-repeat;background-position:0 0;height:37px;width:29px;padding:0;position:absolute;top:20px;left:25px;margin:0;text-indent:100%;z-index:99999;white-space:nowrap;overflow:hidden;cursor:pointer}}@media screen and (max-width: 420px){.open_left{display:block;background-image:url(../images/menu2.png);background-repeat:no-repeat;background-position:0 0;height:49px;width:40px;padding:0;position:absolute;top:10px;left:15px;margin:0;text-indent:100%;white-space:nowrap;overflow:hidden;cursor:pointer}.active_left{display:block;background-image:url(../images/close2.png);background-repeat:no-repeat;background-position:0 0;height:49px;width:40px;padding:0;position:absolute;top:10px;left:15px;margin:0;text-indent:100%;z-index:99999;white-space:nowrap;overflow:hidden;cursor:pointer}.open_right{display:none}.active_right{display:none}}