'Combine 2 css files into one

I have 2 css files . 90% of them is the same but the 10% is different . for example the 1st file have the 90% classes and the other 10% are some classes for different screens. the 2nd file has the same first 90% and the other 10% are new classes i made. i want to merge both to have the first 90% and the other 10% from both files into a single new file. any ideas how to?



Solution 1:[1]

Thanks for the help everyone . turns out vs code has a feature for this by selecting the 2 files in open editors and then compare: css

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Solution Source
Solution 1 Amine Mo