253454 2023-03-06 12:08:51 -0800 Web Inspector: Box model should indicate that a margin has been "trimmed" by its containing block's `margin-trim` property 2023-04-26 16:01:54 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 253606 253610 253712 253713 253714 253715 253716 253717 253718 253719 255736 1 sgill26 sgill26 bfulgham simon.fraser webkit-bug-importer zalan oldest_to_newest 1939200 0 sgill26 2023-03-06 12:08:51 -0800 Web Inspector currently does not take into account the rendered box for showing the element’s box model, but with `margin-trim`, the computed margins may no longer be the same as the used margins, as they might be trimmed by the parent container. We should provide some sort of treatment to indicate this - we should also think a bit more deeply about how to do so, since we currently allow editing margins in the box model, but now that edit may not visually affect anything if that margin was trimmed. Without this work, the box model may show a margin for an edge of an element where no margin was applied at layout time. Not a horrible regression, but odd. 1939201 1 sgill26 2023-03-06 12:09:31 -0800 I think the solution for this will be to update the margin computed value when we do any trimming 1939202 2 sgill26 2023-03-06 12:09:50 -0800 rdar://103374677 1951467 3 bfulgham 2023-04-26 16:01:54 -0700 All subtasks are now complete.