Remove Category Name using CSS display:none given prominence by search engines?

[ttanidis]

When content is hidden by CSS (display:none), is that read by Search engines or are sites penalised for that?

In my case, due to some CMS and other reasons, I need to serve alternative content to users and hide the H1 tag on the page using display:none. I wanted to know if the Search Engine will still treat the H1 tag with the same prominence as when its not hidden.

[Studio 42]

Google remove the hidden H1 from search. I dont know for other search engines.

[ttanidis]

Thanks for your reply.