Leankoala informs you as soon as a syntax error occurs in one of the CSS files. This can be a wrong parenthesis or a non-existing HTML element.  

In strict mode, Leankoala also makes recommendations if, for example, two identical selectors are found at different places in the CSS file. So Leankoala not only helps to find errors but also problematic places in the code. 

CSS Syntax Checker Screenshot
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