[Solved] Should the Bootstrap media queries be saved in a css file or a js file?


Move your style.js css media codes into the style.css
CSS media queries are the part of .css extension files. You should not place it some other extension than .css
Now a days there are preprocessor tool for css like .less, .sass, .scss you can use them in those extension files as well.

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solved Should the Bootstrap media queries be saved in a css file or a js file?