Abakada: Back to Basics > Language References > CSS Properties > Pseudo-Classes > only-child Pseudo-class

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Represents an element without any siblings.

selector:only-child { property: value; }

property	Any valid CSS property.
value	Any of the range of values available to the corresponding property.

The :only-child pseudo-class applies styles to elements that have no siblings.

The syntax for using the :only-child pseudo-class is straightforward. A selector immediately precedes the pseudo-class.

For example, to change the background color of only-child elements on a page.

div:only-child { background-color: beige }

The following demonstrates use of the :only-child pseudo-class in an embedded stylesheet to set the style of only-child elements on a page.

• 14.3.5. :only-child pseudo-class

:first-child( )   :last-child( )   :nth-child( )   :nth-last-child( )