If you like to spread your CSS over multiple files, as many people do (but I don’t), it is generally a good idea to concatenate them before deployment to reduce the number of HTTP requests.
There is one thing to be aware of when doing this – if you use any @import rules they must precede all other rules in that file, as per the CSS 2.1 specification. So if any other than the very first of the CSS files you concatenate has an @import rule, the combined file will violate the specification.
Posted in CSS.
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