.video-js.vjs-vtt-thumbnails {
  display: block;
}
.video-js .vjs-vtt-thumbnail-display {
  position: absolute;
  transition: transform 0.1s, opacity 0.2s;
  bottom: 85%;
  pointer-events: none;
  box-shadow: 0 0 7px rgba(0, 0, 0, .6);
}