Hi. Perfect, I understood how to hide all thumbnails, thanks.
My question now is about a different appearance for desktop and mobile, that's what I'd like to achieve:
Desktop: Thumbnail Grid showing thumbnails and project titles
Mobile: Only Project titles (btw: projects should be all listed under the category "projekte")
This is the category page showing all projects and should be the first page you see when coming to the site.
I tried one thing as a workaround, but it didn't work: to hide the thumbnails with "hideformobile", hide project titles and to instead insert a project description – but I found out that descriptions are (of course) linked to the project thumbnail and therefore remain hidden as well.
Thank you very much for some help.