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[headingoffset-mutations.html]
[headingoffset property mutations on host (not slot) update slotted headings]
expected: FAIL
[headingoffset property mutations propagate via host chain through nested shadow roots]
expected: FAIL
[headingoffset property mutations propagate via host chain across two levels of shadow DOM]
expected: FAIL
[headingoffset property propagates only via host chain through three nested shadow DOMs]
expected: FAIL
[headingoffset property mutations update headings at multiple shadow DOM levels independently]
expected: FAIL
[headingoffset attribute mutations on host (not slot) update slotted headings]
expected: FAIL
[headingoffset attribute mutations propagate via host chain through nested shadow roots]
expected: FAIL
[headingoffset attribute mutations propagate via host chain across two levels of shadow DOM]
expected: FAIL
[headingoffset attribute propagates only via host chain through three nested shadow DOMs]
expected: FAIL
[headingoffset attribute mutations update headings at multiple shadow DOM levels independently]
expected: FAIL
[slot name attribute changes do not change slotted heading levels]
expected: FAIL
[element slot attribute changes do not change heading levels]
expected: FAIL
[slot element removal and addition do not change slotted heading levels]
expected: FAIL
[default-to-named slot transitions do not change heading levels]
expected: FAIL
[swapping slot names does not change slotted heading levels]
expected: FAIL
[manual slot assignment does not change heading levels]
expected: FAIL
[manual slot reassignment between slots does not change heading levels]
expected: FAIL
[non-HTML elements (SVG) slotted with heading descendants get updated via host chain]
expected: FAIL
[non-HTML elements (MathML) slotted with heading descendants get updated via host chain]
expected: FAIL
[manual slot assignment of non-HTML elements does not change heading levels]
expected: FAIL