html {
  height: 100%;
  display: -ms-grid;
  display: grid;
}
body {
  margin: 0;
  padding: 0;
}
.u-version {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.m-main {
  background-color: black;
  position: relative;
  width: 100%;
  height: 100%;
  display: -ms-grid;
  display: grid;
  place-items: center center;
  overflow: hidden;
  --perspective: 100px;
  -webkit-perspective: var(--perspective);
  perspective: var(--perspective);
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
}
.m-main:after {
  display: block;
  content: '';
  -ms-grid-row: 1;
  -ms-grid-column: 1;
  grid-area: 1 / 1;
  width: 100%;
  height: 100%;
  background-image: -o-linear-gradient(45deg, blue, transparent, yellow), -o-linear-gradient(left, #008aff, transparent, #e10019), -o-linear-gradient(top, green, cyan, purple);
  background-image: linear-gradient(45deg, blue, transparent, yellow), linear-gradient(to right, #008aff, transparent, #e10019), linear-gradient(to bottom, green, cyan, purple);
  mix-blend-mode: overlay;
}
.m-main time {
  -ms-grid-row: 1;
  -ms-grid-column: 1;
  grid-area: 1 / 1;
  width: 100px;
  height: 100px;
  -webkit-transform-origin: 50% 0%;
  -ms-transform-origin: 50% 0%;
  transform-origin: 50% 0%;
  will-change: transform;
  background-color: white;
  -webkit-box-shadow: 0 0 0.5rem white, 0 0 1rem white;
  box-shadow: 0 0 0.5rem white, 0 0 1rem white;
}
@supports (transition: all) {
  .m-main time {
    -webkit-box-shadow: 0 0 0.5rem white;
    box-shadow: 0 0 0.5rem white;
  }
}