:empty pseudo-class and textIan HicksonCSS 3 Module W3C Selectors Next :empty pseudo-class and empty elements Previous :nth-last-of-type() pseudo-class with collapsed elements Test # 220 of 276 of the static tests category Testing :empty pseudo-class and text ID 148 Date 2001-11-15 Revision 1.0
This line should have a green background.
p { background: lime; }
p:empty { background: red; }
<p xmlns="http://www.w3.org/1999/xhtml">This line should have a green background.</p>