/* Sets the image for landing and article subpages.  You may want to use different images so separate the selectors as needed */
.zone-landing-header .zone-image, .zone-article-header .zone-image {
  background-image: url(https://mdn.mozillademos.org/files/6113/fx-marketplace-icon.png);
  background-size: 468px 468px; 
}