Fancybox

The important thing is that the code I gave you shows up or is applied under plugins/maxgalleria/addons/templates/image-tiles/skins/borderless.css in the source code. It cannot override if it is above the CSS file in the source.

Well, I found out, that there was no css files in the mg-styles folder in my online site.
Where I tried before, was on local host, and maybe because I did not install the Media Library here. (?)

So, your solution to edit the code in the borderless.css is working fine at my online site version.
Now I must figure out, how to override – cause I don’t know how to get Simple Custom CSS to work. Yet ??

The folder mg-styles now contains some css files with the numbers of each little testgalleri I made. After that, I was not able to use the change in borderless.css, but had to make a new changed css for each gallery number. Put it in the wp-contentfolder, and write the the urls into Advanced/custom styles. I have planned a lot of small galleries on the site. Well, at least I know what to do now.

Is that mg-styles folder used, if you have more than one gallery?

Thanks at lot for your help and patience.

Yes, you can try that.