Anders Tornblad, web developer

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Using Source Maps with CSS

StackOverflow user Rob had a problem inspecting his SASS stylesheets after having them preprocessed by Codekit.

Having set the Output Style to "Compressed", the resulting CSS stylesheets were optimized and minified, making it almost impossible to trace the CSS back to the original SASS files.

Checking the Create a Source Map setting allowed him to help Google Chrome DevTools map the compiled CSS to the original SASS files, using a .map file, that the browser automatically uses. The principle of Source Maps is well known for JavaScript developers, but most people don't know that it is possible for CSS preprocessors too.

More information is available in the Codekit documentation for SASS.