It will be centered automatically and full width if you use a larger original image.
Or you can use css margins to center:
.wplistings-single-listing .listing-image-wrap img { margin: 0 auto; }
Thanks. Is there also a way to get the “active” banner to center along with the image?
Not with the way you have it configured.
My client has only provided the images you see. So I can advise him for future listings, how large should the featured images be?
Well, first to display them full size, you’d need to remove the custom CSS you added to make it only 50% width.
Images should be a minimum of 1000 pixels wide (or as wide as the content area of your site).
