.lenticular-test-play {
  position: fixed;
  z-index: 90;
  width: 64px;
  height: 64px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(85, 85, 85, .94);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transform: translate(-50%, -50%);
  -webkit-tap-highlight-color: transparent;
}
.lenticular-test-play[hidden] { display: none; }
.lenticular-test-play:focus-visible { outline: 2px solid white; outline-offset: 4px; }
.lenticular-test-play svg { width: 28px; height: 28px; margin-left: 4px; }