.asov_container {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: transparent;
  /* The sandbox's shader-scroll overlay is pointer-events: none; the click
     ripple needs the container hit-testable again. */
  pointer-events: auto;
}

.asov_container canvas {
  display: block;
  width: 100%;
  height: 100%;
}