.bg {
  width: 10rem;
  height: 17.8rem;
  position: relative;
  margin: 0 auto;
}
.bg1 {
  background: url(../images/bg1.png) no-repeat;
  background-size: 100% 100%;
}
.bg2 {
  background: url(../images/bg2.png) no-repeat;
  background-size: 100% 100%;
}
.bg3 {
  background: url(../images/bg3.png) no-repeat;
  background-size: 100% 100%;
}
.top {
  width: 7.1rem;
  position: absolute;
  left: 1.45rem;
  top: 1rem;
}
.text {
  position: absolute;
  width: 3.62rem;
  left: 3.19rem;
  top: 16rem;
}
.down-btn {
  width: 6.8rem;
  height: 1.6rem;
  background: url(../images/downBtn.png) no-repeat;
  background-size: 100% 100%;
  position: absolute;
  left: 1.6rem;
  top: 2rem;
}
.bottom-bg {
  width: 10rem;
  height: 4.42rem;
  position: fixed;
  background: url(../images/bottom-bg.png) no-repeat;
  background-size: 100% 100%;
  bottom: 0;
  left: 50%;
  margin-left: -5rem;
  z-index: 500;
}
.new-bg {
  width: 10rem;
  height: 17.2rem;
  background: url(../images/bg.png) no-repeat;
  background-size: 100% 100%;
  background-position-y: -0.7rem;
  margin: 0 auto;
  position: relative;
}
.down-btn2 {
  width: 6.34rem;
  height: 1.62rem;
  background: url(../images/downBtn2.png) no-repeat;
  background-size: 100% 100%;
  position: absolute;
  bottom: 1.2rem;
  z-index: 5;
  left: 50%;
  margin-left: -3.17rem;
}
.down-Go {
  animation: downGo 1s infinite;
}
@keyframes downGo {
  0% {
    transform: scale(1);
  }
  70% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}
.video-bg {
  width: 9.76rem;
  height: 15.13rem;
  position: absolute;
  bottom: 0;
  left: 0.12rem;
  z-index: 5;
}
.down-webp-box {
  width: 7.8rem;
  height: 13.1rem;
  position: absolute;
  bottom: 1rem;
  left: 1.08rem;
  border-radius: 0.5rem;
  overflow: hidden;
  text-align: center;
}
.down-webp-box > img {
  width: 7.7rem;
  margin-top: -0.35rem;
}