Quick answer
An unclosed tag means an opening tag has no matching closing tag.
HTML Unclosed Tag
An unclosed tag means an opening tag has no matching closing tag. Browsers may recover but validators flag it.
Common causes
- Missing </tag>.
- Nested tag closed in wrong order.
How to fix
- Add the missing closing tag.
- Ensure nesting order: open A, open B, close B, close A.
FAQ
- What is unclosed tag?
- Opening tag without matching closing tag.
- Does browser fix it?
- Often yes; validator still reports it.
Fix it now
Try in validator (prefill this example)