Add dynamic CSS

Yes, indeed, I'm currently looking for a solution, I need to create a layout for dynamic content and since I use popup conected with id I'm stucked ((

 

This post explains how to enable dynamic content on the CSS ID and CSS Class fields:

https://divibooster.com/enable-divi-dynamic-content-on-css-id-and-css-class-fields/

Once you have dynamic content enabled on the fields you can set the ID / class in a custom field on your posts and then use that value in the CSS ID / class field of your template / layout by selecting the custom field from the now enabled dynamic content option on those fields.

Alternatively, instead of a custom field, you can use the "Post Slug" dynamic content field added by Divi Dynamic Content Extended to automatically set the CSS ID / class based on the post's slug (which is usually based on the post title), which would more or less achieve what the OP was asking for.

https://divibooster.com/add-the-post-slug-in-divi-with-divi-dynamic-content-extended/