Awesome
vscode-csstree
Validate CSS according to W3C specs and browser implementations.
Extension highlights wrong properties and values when enabled. Just install the extension and open your CSS file. Validation will be performing in background.
<img width="682" src="https://cloud.githubusercontent.com/assets/6654581/18788246/d0d4c7ca-81ae-11e6-9777-36806fd4cbfb.png">CSS validator based on CSSTree as plugin for VSCode.
Extension Settings
csstree.enable
: enable/disable this extension
Other
If you want to disable VSCode's internal CSS linting then just add
"css.validate": false
to your preferences.