Steve Souders, a senior web performance expert at Google, recently wrote a fantastic analysis about why high performing websites should avoid CSS rules that include the @import statement:
In Chapter 5 of High Performance Web Sites, I briefly mention that @import has a negative impact on web page performance. I dug into this deeper for my talk at Web 2.0 Expo, creating several test pages and HTTP waterfall charts, all shown below. The bottomline is: use LINK instead of @import if you want stylesheets to download in parallel resulting in a faster page.
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