<!DOCTYPE html> <html> <body> <h1>The abbr element + the dfn element</h1> <p><dfn><abbr title="Cascading Style Sheets">CSS</abbr> </dfn> is a language that describes the style of an HTML document.</p> </body> </html>
<!DOCTYPE html> <html> <body> <h1>The abbr element + the dfn element</h1> <p><dfn><abbr title="Cascading Style Sheets">CSS</abbr> </dfn> is a language that describes the style of an HTML document.</p> </body> </html>