hi @Anna_Zabuha as @memetican mentioned “collection page is a template page” this mean that project page design is only one and only contain different data . Your description is too verbose to understand what you trying to do. Is always beneficial to be familiar with what WF can do and what not, but this is like with everything else. 
The best way to get help is to follow the forum post guide that is pinned on top of each section, if you have missed it here they are.
When posting please:
- Required: Share your project’s Read-Only link and live site’s Published link
- The read-only link is a special URL generated in the Dashboard to allow others to view your project in the Webflow Designer. How to get your project’s read-only link?
- The published link is the webflow.io subdomain where you can view the live site with custom code running. It is IMPORTANT to share this link, as custom code (eg. javaScript) does not run in the Designer.
- Describe issue in detail including what page, section and/or element is localized
- Upload as many screenshots as possible or provide screencast videos to help others help you faster
- Add a description and/or post a link to a working example of what you’re trying to achieve
- Reply to users by tagging using the
@sign followed by their forum username like this: @forumMemberName