Enhancement: implement content-visibility for Walled Gardens

[rejhgadellaa]

Type of Change

• Enhancement
• Content
• Improvement / Suggestion
• Bug
• Other (please clarify below)

Summary

The Walled Gardens document is pretty big, and getting bigger still (v1.2). I haven't benchmarked anything, but it may be worth looking into using content-visibility to help the browser a bit.

Details

More about content-visibility: content-visibility: the new CSS property that boosts your rendering performance on web.dev

Just doing content-visibility will cause 'jittery scrollbars', see content-visiblity Without Jittery Scrollbars and Resize-Resilient content-visibility Fixes on how to avoid that.