Cant change typo on Rich Text Block in CMS collection page

Clearly i am not Webflow expect and I want to change font attributes for a Rich Text Block that is on CMS collection page (Blog template) but it doesnt seem to do anything. What am I doing wrong?

Follow these steps:

Should be working!

Sorry video is very fast and I still dont understand where I make the change.I cant seem to select a Paragraph in my Rich Text Block? remember this page is Blog post template

You need to style the RTE element without it being binded to actual content from your CMS.
You’ll then be able to click on specific paragraphs or H2 ,etc and style them as part of the RTE with specific settings.