styles.css

.filter_oembed_docsdotcom iframe {
  width: 100%;
  height: 400px; }

.oembed-card {
  position: relative;
  min-height: 10em;
  background-size: cover;
  transition: all 0.4s ease-in-out; }

.oembed-card-title {
  position: absolute;
  top: 0;
  color: #fff;
  background-color: rgba(0, 0, 0, 0.8);
  padding: 0.5em 0.5em; }

.oembed-content > *:first-child {
  width: 100%; }

.oembed-content video {
  height: auto; }

.btn.btn-link.oembed-card-play {
  background-image: url([[pix:filter_oembed|play]]);
  background-repeat: no-repeat;
  position: absolute;
  width: 15%;
  top: 42.5%;
  left: 42.5%;
  padding-top: 15%;
  margin: 0;
  background-position: 0;
  opacity: 0.9;
  transition: all 0.4s ease-in-out;
  filter: drop-shadow(1px 1px 1px #666); }

.btn.btn-link.oembed-card-play:hover {
  background-position: 0;
  filter: drop-shadow(0px 0px 0px #666);
  opacity: 1; }

.oembed-responsive {
  width: 100%;
  display: block;
  position: relative; }
  .oembed-responsive > *:not(video):first-child {
    position: absolute !important;
    top: 0 !important;
    bottom: 0 !important;
    right: 0 !important;
    left: 0 !important;
    height: 100% !important;
    width: 100% !important; }

.oembed-responsive-pad {
  display: block; }

.oembed-provider-details {
  font-size: 0.9em;
  margin-top: 1em;
  display: none; }

tr.oembed-provider-editing .oembed-provider-details {
  display: block; }

tr.oembed-provider-editing .oembed-provider-actions {
  display: none; }

.oembed-provider-actions {
  float: right;
  margin-right: 1em; }

#oembedproviders td.provider div.alert {
  margin-top: 1em; }

.oembed-providersource {
  font-size: 90%; }