.bg {
  width: 100vw;
  height: 100%;
  background: url(../images/video.png?v=2022081201) no-repeat;
  background-size: 100% auto;
  position: relative;
}
.video {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  width: 100vw;
}
.shadow {
  width: 100vw;
  height: 100%;
  position: absolute;
  z-index: 3;
  top: 0;
  left: 0;
  background: url(../images/bg.png?v=2022081201) no-repeat;
  background-size: 100% 100%;
}
.banner {
  width: 9.78rem;
  height: 11.86rem;
  background: url(../images/banner.png?v=2022081201) no-repeat;
  background-size: 100% 100%;
  position: absolute;
  top: 0;
  left: 0.11rem;
  left: 50%;
  margin-left: -4.89rem;
  z-index: 5;
  top: 0.5rem;
}
.shadow1 {
  width: 100vw;
  height: 6.5rem;
  position: absolute;
  top: 0;
  z-index: 2;
  backdrop-filter: blur(5px);
}
.down {
  width: 6.77rem;
  height: 1.7rem;
  background: url(../images/down.png?v=2022081201) no-repeat;
  background-size: 100% 100%;
  position: absolute;
  z-index: 5;
  left: 50%;
  margin-left: -3.385rem;
  top: 13rem;
  transform: scale(1);
  animation: downShow 0.9s linear infinite;
}
@keyframes downShow {
  0% {
    transform: scale(1);
  }
  70% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}