drupal/core/modules/ckeditor5/css/drupalmedia.css

/**
 * @file
 * Styles for the Drupal Media in CKEditor 5.
 *
 * Most of these styles are written to match those in the CKEditor 5 image
 * plugin to provide a consistent editing experience.
 */

.ck .drupal-media {
  position: relative;
  display: table;
  clear: both;
  min-width: 50px;
  margin: 0.9em auto;
  text-align: center;
}

.ck-content .drupal-media img {
  display: block;
  min-width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

.ck-content .drupal-media > figcaption {
  display: table-caption;
  padding: 0.6em;
  caption-side: bottom;
  word-break: break-word;
  color: hsl(0, 0%, 20%);
  outline-offset: -1px;
  background-color: hsl(0, 0%, 97%);
  font-size: 0.75em;
}
.ck.ck-editor__editable .drupal-media__caption_highlighted {
  animation: drupal-media-caption-highlight 0.6s ease-out;
}

@keyframes drupal-media-caption-highlight {
  0% {
    background-color: hsl(52, 100%, 50%);
  }

  100% {
    background-color: hsl(0, 0%, 97%);
  }
}

.ck .drupal-media__metadata-error {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  border: 1px solid #e29700;
  border-radius: 50%;
  background: #fdf8ed;
}
.ck .drupal-media__metadata-error-icon {
  display: block;
  width: 28px;
  height: 28px;
  background: url("../../../misc/icons/e29700/warning.svg") no-repeat center 4px;
  background-size: 18px;
}
.ck .drupal-media__metadata-error .ck-tooltip {
  display: block;
  overflow: visible;
}
.ck .drupal-media__metadata-error:hover .ck-tooltip {
  visibility: visible;
  opacity: 1;
}
.ck .drupal-media__metadata-error:hover .ck-tooltip__text {
  display: block;
  width: 240px;
}