FF148 respects CSS overflow for replaced elements#29002
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overflow for replaced elements
caugner
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Feb 13, 2026
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The
overflow(and longhand variants) set how overflow is handled - such as by overflowing (visible), hiding or clipping to the bounding container, or clipping and adding scrollbars.Prior to CSS Module 4 this was ignored for replaced elements (such as images) that overflow their container. In CSS Module 4 replaced elements should do as other elements: https://drafts.csswg.org/css-overflow-4/#overflow-control
Support was added for FF148 in https://bugzilla.mozilla.org/show_bug.cgi?id=1999100
Support was added for Crhome in 108 - https://chromestatus.com/feature/5137515594383360
Safari doesn't support this yet - ran this test code on latest browserstack hosted browser and you can see that the image is clipped to the circle https://codepen.io/therealpaulplay/pen/JoGQogd
This adds a subfeature to
overflowand its longhands.Related docs can be tracked in mdn/content#42744