Hi! 

Does anybody know how to change the size of the thumbnail images in the Stripped theme?  On modern monitors with 4k resolution, they appear very small.  I have tried playing with the theme CSS, but I can never  get it right. 

I am running Piwigo 2.10 on Piwigo.com, but my question is not limited to this version of the software.

Thanks in advance for your thoughts!