@layer behaviors {
[data-media-init] [data-media-placeholder] {
  transition:
    opacity 0.2s ease,
    visibility 0.2s ease;
}

[data-media-init][data-media-frame="ready"][data-media-status="playing"] [data-media-placeholder],
[data-media-init][data-media-frame="ready"][data-media-status="paused"] [data-media-placeholder] {
  visibility: hidden;
  opacity: 0;
}}