Fix scrollable elements offset for fixed elements

[tvdeyen]

What is this pull request for?

If we have fixed elements tabs, we need to make sure the specifity of the CSS selector is higher than the specifity of the main content area.

Checklist

• I have followed Pull Request guidelines
• I have added a detailed description into each commit message

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.48%. Comparing base (17cb9d0) to head (96a3c74).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3613   +/-   ##
=======================================
  Coverage   97.48%   97.48%           
=======================================
  Files         314      314           
  Lines        8256     8256           
=======================================
  Hits         8048     8048           
  Misses        208      208           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[alchemycms-bot]

💔 All backports failed

Status	Branch	Result
❌	8.0-stable	Backport failed because of merge conflicts You might need to backport the following PRs to 8.0-stable: - Use css only solution to reduce FOUC - Remove dialog sitemap css code - Fix sitemap highlight color in dark mode - Make create element dialog wider (#3445) - Fix element icon hover for elements with warning (#3444) - Fix select2 close icon visibility (#3443)

Manual backport

To create the backport manually run:

backport --pr 3613

Questions ?

Please refer to the Backport tool documentation and see the Github Action logs for details

[alchemycms-ci-bot]

💚 All backports created successfully

Status	Branch	Result
✅	8.0-stable

Questions ?

Please refer to the Backport tool documentation