CSS Validator
Validate CSS syntax: check balanced braces, declaration colons, and basic errors with line numbers.
Valid CSS — 3 rules, 10 declarations
Stats
Rules3
Declarations10
Errors0
CSS Validator
This validator performs client-side structural checks on CSS: balanced braces, declaration colons, and unexpected tokens. It counts selectors (rules) and property declarations, and reports errors with line numbers so you can jump straight to the problem. For full W3C spec validation, use the official W3C CSS Validator. All processing runs entirely in your browser.
Private & free — this tool runs entirely in your browser.
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