@ Import

@ Import is generally written in the following ways:

@ Import 'style.css '// windows ie4/ns4, Mac OS X ie5, Macintosh ie4/ie5/ns4 not recognized

@ Import export style.css "// windows ie4/ns4, which is not recognized by Macintosh ie4/ns4

@ Import url(style.css) // windows ns4, which is not recognized by Macintosh ns4

@ Import url('style.css ') // windows ns4, Mac OS X ie5, Macintosh ie4/ie5/ns4 not recognized

@ Import url(”style.css ") // windows ns4, which is not recognized by Macintosh ns4

According to the analysis above, @ import url(style.css) and @ import url(”style.css "are the best choices, and the most compatible browsers are supported. From the perspective of byte optimization, @ import url(style.css) is worthy of the most recommended syntax.