Change Details

In https://gerrit.wikimedia.org/r/c/mediawiki/skins/Vector/+/803941 we broke functionality that allowed extensions/gadgets to mark conntet in such a way it didn't overlap the header. # TODO [] Restore the CSS [] Improve the documentation so it's not accidentally removed again https://www.mediawiki.org/wiki/Reading/Web/Desktop_Improvements/Features/Sticky_Header#My_templates_use_sticky_elements._How_do_I_get_them_to_work_with_the_sticky_header? # QA [] Go to https://en.wikipedia.beta.wmflabs.org/wiki/Sticky_test and login. Scroll the page until the "sticky element" text sticks. The sticky text should not overlap the sticky header == QA Results - Beta | **AC** | **Status** | **Details** | | ----- | ----- | ----- | | 1 | ✅ | T311170#8027333 | == QA Results - Prod | **AC** | **Status** | **Details** | | ----- | ----- | ----- | | 1 | ✅ | T311170#8069470 |