原文don’t use @import

• Using @import within a stylesheet adds one more roundtrip to the overall download time of the page.
• Using @import in IE causes the download order to be altered. This may cause stylesheets to take longer to download, which hinders progress rendering making the page feel slower.

翻译：

• 在样式表中使用@import增加一个甚至更多来回的页面整体下载时间 

Difference between link and @import

原文：http://www.cnblogs.com/AliceX-J/p/5344895.html