style.css

* {
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
  /* for touch screen */
  touch-action: none;
}

body {
  overflow: hidden;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  background: #111;
  -webkit-perspective: 1000px;
  perspective: 1000px;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
}

#drag-container,
#spin-container {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  margin: auto;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  -webkit-transform: rotateX(-10deg);
  transform: rotateX(-10deg);
}

#drag-container img,
#drag-container video {
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  line-height: 200px;
  font-size: 50px;
  text-align: center;
  -webkit-box-shadow: 0 0 8px #fff;
  box-shadow: 0 0 8px #fff;
  -webkit-box-reflect: below 10px
    linear-gradient(transparent, transparent, #0005);
}

#drag-container img:hover,
#drag-container video:hover {
  -webkit-box-shadow: 0 0 15px #fffd;
  box-shadow: 0 0 15px #fffd;
  -webkit-box-reflect: below 10px
    linear-gradient(transparent, transparent, #0007);
}

#drag-container #p1 {
  font-family: Serif;
  position: absolute;
  top: 100%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%) rotateX(90deg);
  transform: translate(-50%, -50%) rotateX(90deg);
  color: #fff;
  font-size: 1.5rem;
  width: 10rem;
}

#drag-container #p2 {
  font-family: Serif;
  position: absolute;
  -webkit-transform: translate(-50%, -50%) rotateX(90deg);
  transform: translate(-50%, -50%) rotateX(90deg);
  color: #fff;
  font-size: 1.5rem;
  width: 10rem;
}

#drag-container #p1 span {
  font-size: 1.2rem;
  margin-left: 2.5rem;
}

#ground {
  width: 900px;
  height: 900px;
  position: absolute;
  top: 100%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%) rotateX(90deg);
  transform: translate(-50%, -50%) rotateX(90deg);
  background: -webkit-radial-gradient(
    center center,
    farthest-side,
    #9993,
    transparent
  );
}

#music-container {
  position: absolute;
  top: 0;
  left: 0;
}

@-webkit-keyframes spin {
  from {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
  }
  to {
    -webkit-transform: rotateY(360deg);
    transform: rotateY(360deg);
  }
}

@keyframes spin {
  from {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
  }
  to {
    -webkit-transform: rotateY(360deg);
    transform: rotateY(360deg);
  }
}
@-webkit-keyframes spinRevert {
  from {
    -webkit-transform: rotateY(360deg);
    transform: rotateY(360deg);
  }
  to {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
  }
}
@keyframes spinRevert {
  from {
    -webkit-transform: rotateY(360deg);
    transform: rotateY(360deg);
  }
  to {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
  }
}

#initial {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* CSS */
.button-29 {
  align-items: center;
  appearance: none;
  background-image: radial-gradient(100% 100% at 100% 0, #5adaff 0, #5468ff 100%);
  border: 0;
  border-radius: 6px;
  box-shadow: rgba(45, 35, 66, .4) 0 2px 4px,rgba(45, 35, 66, .3) 0 7px 13px -3px,rgba(58, 65, 111, .5) 0 -3px 0 inset;
  box-sizing: border-box;
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  font-family: "JetBrains Mono",monospace;
  height: 48px;
  justify-content: center;
  line-height: 1;
  list-style: none;
  overflow: hidden;
  padding-left: 16px;
  padding-right: 16px;
  position: relative;
  text-align: left;
  text-decoration: none;
  transition: box-shadow .15s,transform .15s;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  white-space: nowrap;
  will-change: box-shadow,transform;
  font-size: 18px;
}

.button-29:focus {
  box-shadow: #3c4fe0 0 0 0 1.5px inset, rgba(45, 35, 66, .4) 0 2px 4px, rgba(45, 35, 66, .3) 0 7px 13px -3px, #3c4fe0 0 -3px 0 inset;
}

.button-29:hover {
  box-shadow: rgba(45, 35, 66, .4) 0 4px 8px, rgba(45, 35, 66, .3) 0 7px 13px -3px, #3c4fe0 0 -3px 0 inset;
  transform: translateY(-2px);
}

.button-29:active {
  box-shadow: #3c4fe0 0 3px 7px inset;
  transform: translateY(2px);
}