How to make an AO3 work skin that doesn’t break
A work skin can fail silently on AO3. Here is the save-and-read-back check that catches it, and the four failure modes worth knowing.
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AO3 Allowed CSS Properties: All 182, and Why Skins Fail
AO3 can reject a whole skin because of one property or value. Search the complete allowlist and find practical replacements for common failures.
