Symptom: sticky element does not stick

Root cause#

An ancestor has overflow: hidden/auto, or no inset utility was given.

The fix#

Remove overflow-hidden from ancestors; add top-0; verify the scroll container.

Verify#

  • Hard-refresh (the CSS cache is the #1 false negative)
  • Re-generate and re-link the stylesheet
  • Search the docs for the exact class — spelling is unforgiving

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