/* media-placeholder.css — grey placeholder for materials without a real src */
.material--bild img[src=""], .material--bild img:not([src]),
.material--karte img[src=""], .material--karte img:not([src]) {
  display: block;
  width: 100%;
  min-height: 180px;
  background: #c8c8c8;
  content: '';
}