box3d animation

<div class="box3d__download">
<div class="box3d__bands"><a href="https://dl.dropboxusercontent.com/s/fmmiyresjdhr7t8/SVG-MAX-by-Kostas-Sliazas.zip?dl=0" target="_blank" rel="noopener">DOWNLOAD</a></div>
<div class="box3d__fron"></div>
<div class="box3d__fron box3d__fron--backf"><span class="box3d__text">&#128285;<br>download</span></div>
<div class="box3d__left"></div>
<div class="box3d__left box3d__left--backf"><span class="box3d__text">&#9745;<br>free</span></div>
<div class="box3d__back"><span class="box3d__text">svg</span></div>
<div class="box3d__righ"><span class="box3d__text">vectors</span></div>
<div class="box3d__boto"><span class="box3d__text">🐾🐾🐾🐾🐾🐾🐾🐾🐾🐾</span></div>
<div class="box3d__topl"></div>
<div class="box3d__topr"></div>
<div class="box3d__topf"></div>
<div class="box3d__topb"></div>
</div>

@keyframes scaleshadow {
  25% {
    box-shadow:
      0 0 0.125em rgba(0, 0, 0, 0.2),
      0 0 0.125em rgba(0, 0, 0, 0.2),
      -0.35em 0 0.125em rgba(0, 0, 0, 0.2),
      0.35em 0 0.125em rgba(0, 0, 0, 0.2);
  }
  50% {
    box-shadow:
      0 0 0.125em rgba(0, 0, 0, 0.2),
      0 0 0.125em rgba(0, 0, 0, 0.2),
      -0.25em 0 0.125em rgba(0, 0, 0, 0.2),
      0.25em 0 0.125em rgba(0, 0, 0, 0.2);
  }
  75% {
    box-shadow:
      0 -0.35em 0.125em rgba(0, 0, 0, 0.2),
      0 0.35em 0.125em rgba(0, 0, 0, 0.2),
      -0.25em 0 0.125em rgba(0, 0, 0, 0.2),
      0.25em 0 0.125em rgba(0, 0, 0, 0.2);
  }
  to {
    box-shadow:
      0 -0.25em 0.125em rgba(0, 0, 0, 0.2),
      0 0.25em 0.125em rgba(0, 0, 0, 0.2),
      -0.25em 0 0.125em rgba(0, 0, 0, 0.2),
      0.25em 0 0.125em rgba(0, 0, 0, 0.2);
  }
}
@keyframes topl {
  to {
    transform: translateY(-0.5em) rotateX(90deg) rotateY(-220deg);
  }
}
@keyframes topr {
  to {
    transform: translateY(-0.5em) rotateX(90deg) rotateY(220deg);
  }
}
@keyframes topf {
  to {
    transform: translateZ(0.5em) rotateZ(90deg) rotateY(130deg);
  }
}
@keyframes topb {
  to {
    transform: translateZ(-0.5em) rotateZ(-90deg) rotateY(120deg);
  }
}
@keyframes rotate {
  to {
    transform: rotateX(-45deg) rotateY(-305deg);
  }
}
@keyframes outs {
  70%,
  to {
    transform: scale(1) translate(-50%, -100%);
  }
}
.box3d {
  font-size: 9em;
  perspective: 300px;
  user-select: none;
}
.box3d__download a {
  color: var(--theme-text-color);
}
.box3d__download {
  animation: rotate 10s linear infinite;
  height: 1em;
  position: relative;
  text-align: center;
  transform-origin: center center;
  transform-style: preserve-3d;
  transform: rotateX(-45deg) rotateY(55deg);
  width: 1em;
}
.box3d__fron {
  transform: translateZ(0.5em);
}
.box3d__back {
  transform: scaleX(-1) translateZ(-0.5em);
}
.box3d__left {
  transform: translateX(-0.5em) rotateY(-90deg);
}
.box3d__righ {
  transform: translateX(0.5em) rotateY(90deg);
}
.box3d__boto {
  transform: translateY(0.5em) rotateX(90deg);
}
.box3d__topl,
.box3d__topr {
  transform-origin: left center;
  transform: translateY(-0.5em) rotateX(90deg);
  z-index: 1;
}
.box3d__topr {
  right: 0;
  transform-origin: right center;
}
.box3d__topf {
  right: 0;
  transform-origin: 0.5em 0;
  transform: translateZ(0.5em) rotateZ(90deg) rotateY(-90deg);
}
.box3d__topb {
  transform-origin: 0 0;
  transform: translateZ(-0.5em) rotateZ(-90deg) rotateY(-90deg);
}
.box3d__back,
.box3d__boto,
.box3d__fron,
.box3d__left,
.box3d__righ {
  background: #e7ddb8;
  box-sizing: border-box;
  height: 1em;
  overflow: hidden;
  position: absolute;
  top: 0;
  width: 1em;
}
.box3d__back,
.box3d__fron,
.box3d__left,
.box3d__righ {
  box-shadow:
    0 0 0.1em #796a3541 inset,
    0.2em 0.1em 0.2em 0.1em #ad9f6b66 inset;
}
.box3d__boto {
  box-shadow: 0 0 0.125em 0 rgba(0, 0, 0, 0.4);
}
.box3d__topb,
.box3d__topf,
.box3d__topl,
.box3d__topr {
  box-shadow:
    0 0 0.1em #796a3541 inset,
    0 0 0.2em 0.1em #ad9f6b66 inset;
  background: #e7ddb8;
  box-sizing: border-box;
  height: 1em;
  outline: 1px solid transparent;
  overflow: hidden;
  position: absolute;
  top: 0;
  width: 0.5em;
}
.box3d__download > div {
  animation-duration: 2s;
  animation-fill-mode: forwards;
  display: flex;
  place-content: center;
  place-items: center;
}
.animation .box3d__download > div {
  animation-direction: reverse;
  animation-fill-mode: backwards;
  animation-name: initial;
}
.animation .box3d__download .box3d__bands {
  animation-delay: 0s;
  animation-duration: 0.5s;
}
.box3d__topl {
  animation-name: topl;
}
.box3d__topr {
  animation-name: topr;
}
.box3d__topb,
.box3d__topf {
  animation-delay: 1s;
}
.box3d__topf {
  animation-name: topf;
}
.box3d__topb {
  animation-name: topb;
}
.box3d__boto {
  animation-name: scaleshadow;
  animation-duration: 2.5s;
  animation-delay: 0.5s;
}
.box3d__bands {
  animation: 1s 1s outs;
}
.box3d__backf {
  backface-visibility: hidden;
  background: 0 0;
  z-index: 1;
}
.box3d__bands {
  font-size: 12px;
  height: 100%;
  left: 50%;
  position: absolute;
  transform: scale(0) translate(-50%, -50%);
}
.box3d__text {
  font-size: 16px;
}