I’m using the Fluida theme. When I write a post, I always select a featured image to appear as a banner above the post when published. The problem is this doesn’t always happen. Some of my posts show the featured images, others don’t. Why is that?
(I don’t think it has anything to do with picture size – all the images I used are more or less the same size)
For the featured image to be used as a header image (when this option is enabled), the image needs to be at least 75% of the site’s configured width (1920px by default).