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VSCode CSSTree Validator

<a href="https://marketplace.visualstudio.com/items?itemName=smelukov.vscode-csstree" target="__blank"><img src="https://img.shields.io/visual-studio-marketplace/v/smelukov.vscode-csstree.svg?label=VSCode%20Marketplace" alt="Visual Studio Marketplace Version" /></a>

An extension for Visual Studio Code that validates CSS according to W3C specifications and browser implementations.

This extension highlights incorrect at-rules, properties, and values in your CSS files. It utilizes the CSSTree capabilities to analyze CSS syntax and report any issues.

Note: If you encounter false positives or false negatives—such as unknown properties being flagged or invalid values not being detected—please report these issues on the CSSTree issue tracker.

Note: Currently, CSSTree does not support selector syntax matching. As a result, this extension does not validate selectors. Selector validation will be added once it becomes available in CSSTree (see issue #34).

Example

Extension Settings

Troubleshooting

To prevent overlapping warnings with VSCode's default CSS linting, you can disable the built-in linter by adding the following setting to your configuration:

"css.validate": false

License

MIT