* {
  margin: 0;
  padding: 0;
}
body {
  background-color: black;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}
.muyu {
  position: absolute;
  margin: auto 0;
  display: flex;
  bottom: 0px;
  top: 0px;
  width: 100%;
  height: 300px;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
.muyu > img {
  width: 300px;
  height: 200px;
  user-select: none;
  transition: all 0.3s;
}
.gongde {
  position: relative;
  color: #fff;
  height: 10px;
}
.gongde-item {
  position: absolute;
  left: -50vw;
  width: 100vw;
  font-size: 18px;
  font-weight: 600;
  text-align: center;
  transform: translateY(0px);
  animation: move 2s;
}
@keyframes move {
  0% {
    transform: translateY(0px);
    opacity: 1;
  }
  100% {
    transform: translateY(-100px);
    opacity: 0;
  }
}
.setting {
  position: relative;
  left: 15px;
  top: 15px;
}
.clickDown {
  transform: scale(0.9);
}