.media-gallery__item-thumbnail img:not([alt]),
.audio-player__canvas:not([title]),
.video-player video:not([title]), 
.media-gallery__gifv video:not([title]),
.media-gallery__item-thumbnail img[alt=""], .audio-player__canvas[title=""], .video-player video[title=""], .media-gallery__gifv video[title=""]
 {
box-sizing: border-box;
border: 3px solid pink;
border-image: repeating-linear-gradient(
    -55deg,
    #000,
    #000 20px,
    #ffb101 20px,
    #ffb101 40px
  ) 10;
}