basics of website design banner photo

HTML

HTML 5

CSS 2.1

CSS 3

Reference

HTML <dfn> Element

The <dfn> element contains the first occassion that a term is defined. It is commonly used in conjunction with the title attribute
Example:

<dfn>CSS: </dfn>stands for Cascading Style Sheets

Result:
CSS: stands for Cascading Style Sheets

Most modern browsers render the definition term in italics including IE9, Chrome and Firefox.

HTML 4 Element List