2020 continues to be pretty full-on, so apologies for a shorter than usual CSS Layout News this week. However some nice links that are well worth your time. The piece about CSS painting order has been shared quite a lot in various places. I particularly liked the note about how some possibly arbitrary behavior has come to be relied upon and so the way something works can't be changed.
This comes up a lot when talking about CSS, some things behave a bit strangely in the light of modern CSS which is more consistent. However we can't break the web and change something that will break many websites. Therefore these things remain, and understanding why they are so can make CSS seem less weird.