不管您的目标是HTML过渡版、HTML严格版、XHTML过渡版，还是XHTML严格版，都需要将样式拉入外部CSS样式表中。
Whether you 're striving for HTML transitional , HTML strict , XHTML transitional , or XHTML strict , you need to pull any style out of your page and get it into external CSS stylesheets .
过渡版