我想弄清楚如何正确使用
例子1:
dfn
标签、title
属性和 abbr
标签。我不确定自己是否使用得正确,希望有人能告诉我下面的例子是否正确,如果不正确,哪些例子是错误的以及为什么,这样我就能更好地理解并纠正错误。谢谢!例子1:
<p><dfn>CSS</dfn> is a simple mechanism for adding style to Web documents.</p>
例子 2
<p><dfn title="Cascading Style Sheets">CSS</dfn> is a simple mechanism for adding style to Web documents.</p>
例子3
<p><dfn title="A style sheet language used for describing the look and formatting of a document written in a markup language.">CSS</dfn> is a simple mechanism for adding style to Web documents.</p>
例子 4
<p><dfn><abbr title="Cascading Style Sheets">CSS</abbr></dfn> is a simple mechanism for adding style to Web documents.</p>
示例5
<p><dfn title="CSS"><abbr title="Cascading Style Sheets">CSS</abbr></dfn> is a simple mechanism for adding style to Web documents.</p>