Add background images to a Bibblio module
You might have pages on your site that don’t have images in them. This is fair enough - it might be an article that didn’t require illustration, or it might be a post containing embedded video or audio playback objects that were visually impacting enough.
This will mean that you’ll see gray tiles representing these pages in the Bibblio Related Content Module. They will work sure enough but they won’t be very impactful.
A solution to this is to add some generic images to the backgrounds of your Related Content Module tiles. That way, if a thumbnail image is missing, the tile will show a default image instead of the gray background.
Do this by adding some CSS to your site's pre-existing style sheet. Be sure your style sheet loads after the Bibblio style sheet (bib-related-content.css) so that it overwrites Bibblio’s default class properly.
The following guide explains how to either: