.start{position:relative}.start,.start .palyBtn{width:100%;height:100vh}.start .palyBtn{position:absolute;top:0;left:0;z-index:10;background:url(../img/20220411103533.10f69ea5.jpg) no-repeat;background-size:100%}.start video{-o-object-fit:fill;object-fit:fill}.start img,.start video,.start video source{width:100%;height:100%}.start .enterBtn{width:17.6rem;height:4.8rem;position:fixed;bottom:7.2rem;left:50%;margin-left:-8.8rem;z-index:100;background:url("../img/Group 555 (1).a8a52141.svg") no-repeat;background-size:100%;font-size:1.4rem;font-family:PingFang SC,PingFang SC-Regular;font-weight:400;text-align:CENTER;color:#fff;line-height:4.8rem;text-align:center;letter-spacing:0}.start .tioaguo{width:5rem;height:2.5rem;background:#000;opacity:.6;color:#fff;text-align:center;line-height:2.5rem;position:absolute;right:3rem;top:3rem;border-radius:.5rem}