摘要：css2.0对权重描述的并不是很清楚，但是在CSS2.1里W3C已经对CSS的权重有了明确的规定。Media type and element matchImportance and origin in ascending order of importance (confusingly):user agent style sheetsuser normal style sheetsauthor normal style sheetsauthor important style sheetsuser important style sheetsSpecificitySource order　. 阅读全文