Board Thread:Support Requests - Getting Technical/@comment-24142930-20171230130225/@comment-9605025-20171230194709

Yes, as an admin, you can create additional CSS pages in the MediaWiki namespace. However, it must be included using @import.

Would it be possible for you to link to your template?

Did you want to change the width/height to adjust for each image or adjust for where the image is used? If the latter, consider using the CSS property background-size. If the former, you can just do that in the style-sheet.

Lastly, chances are you will need to write CSS for each image. However, if you want to be able to use all combinations of your images, you can do something like the following.