摘要：
web标准的许诺：一次创建，随处发布！！http://www.webstandards.org/http://www.alistapart.com/http://jigsaw.w3.org/css-validator/http://www.forabeautifulweb.com/ 阅读全文
摘要：
So what DOCTYPEs should we use? Glad you asked. The following complete DOCTYPEs are the ones we need:HTML 4.01 Strict, Transitional, Frameset<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd"> <!DOCTYPE HTML PUBLIC "-//W3C//DTD 阅读全文