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CSS Pseudo-classes


What are Pseudo-classes?

A pseudo-class is used to define a special state of an element.

For example, it can be used to:

  • Style an element when a user mouses over it
  • Style visited and unvisited links differently

Syntax

The syntax of pseudo-classes:

selector:pseudo-class {
    property:value;
}


Anchor Pseudo-classes

Links can be displayed in different ways:

Example

/* unvisited link */
a:link {
    color: #FF0000;
}

/* visited link */
a:visited {
    color: #00FF00;
}

/* mouse over link */
a:hover {
    color: #FF00FF;
}

/* selected link */
a:active {
    color: #0000FF;
}

Try it yourself »

Note Note: a:hover MUST come after a:link and a:visited in the CSS definition in order to be effective!!
a:active MUST come after a:hover in the CSS definition in order to be effective!!
Pseudo-class names are not case-sensitive.


Pseudo-classes and CSS Classes

Pseudo-classes can be combined with CSS classes:

Example

a.highlight:hover {
    color: #ff0000;
}

Try it yourself »

When you hover over the link in the example, it will change color.


CSS - The :first-child Pseudo-class

The :first-child pseudo-class matches a specified element that is the first child of another element.

Note Note: For :first-child to work in IE8 and earlier, a <!DOCTYPE> must be declared.

Match the first <p> element

In the following example, the selector matches any <p> element that is the first child of any element:

Example

p:first-child {
    color: blue;
}

Try it yourself »


Match the first <i> element in all <p> elements

In the following example, the selector matches the first <i> element in all <p> elements:

Example

p i:first-child {
    color: blue;
}

Try it yourself »


Match all <i> elements in all first child <p> elements

In the following example, the selector matches all <i> elements in <p> elements that are the first child of another element:

Example

p:first-child i {
    color: blue;
}

Try it yourself »


CSS - The :lang Pseudo-class

The :lang pseudo-class allows you to define special rules for different languages.

Note Note: IE8 supports the :lang pseudo-class only if a <!DOCTYPE> is specified.

In the example below, the :lang class defines the quotation marks for q elements with lang="no":

Example

<html>
<head>
<style>
q:lang(no) {
    quotes: "~" "~";

}
</style>
</head>

<body>
<p>Some text <q lang="no">A quote in a paragraph</q> Some text.</p>
</body>
</html>

Try it yourself »


Examples

More Examples

Add different styles to hyperlinks
This example demonstrates how to add other styles to hyperlinks.

Use of :focus
This example demonstrates how to use the :focus pseudo-class.


All CSS Pseudo Classes

Selector Example Example description
:active a:active Selects the active link
:checked input:checked Selects every checked <input> element
:disabled input:disabled Selects every disabled <input> element
:empty p:empty Selects every <p> element that has no children
:enabled input:enabled Selects every enabled <input> element
:first-child p:first-child Selects every <p> elements that is the first child of its parent
:first-of-type p:first-of-type Selects every <p> element that is the first <p> element of its parent
:focus input:focus Selects the <input> element that has focus
:hover a:hover Selects links on mouse over
:in-range input:in-range Selects <input> elements with a value within a specified range
:invalid input:invalid Selects all <input> elements with an invalid value
:lang(language) p:lang(it) Selects every <p> element with a lang attribute value starting with "it"
:last-child p:last-child Selects every <p> elements that is the last child of its parent
:last-of-type p:last-of-type Selects every <p> element that is the last <p> element of its parent
:link a:link Selects all unvisited links
:not(selector) :not(p) Selects every element that is not a <p> element
:nth-child(n) p:nth-child(2) Selects every <p> element that is the second child of its parent
:nth-last-child(n) p:nth-last-child(2) Selects every <p> element that is the second child of its parent, counting from the last child
:nth-last-of-type(n) p:nth-last-of-type(2) Selects every <p> element that is the second <p> element of its parent, counting from the last child
:nth-of-type(n) p:nth-of-type(2) Selects every <p> element that is the second <p> element of its parent
:only-of-type p:only-of-type Selects every <p> element that is the only <p> element of its parent
:only-child p:only-child Selects every <p> element that is the only child of its parent
:optional input:optional Selects <input> elements with no "required" attribute
:out-of-range input:out-of-range Selects <input> elements with a value outside a specified range
:read-only input:read-only Selects <input> elements with a "readonly" attribute specified
:read-write input:read-write Selects <input> elements with no "readonly" attribute
:required input:required Selects <input> elements with a "required" attribute specified
:root root Selects the document's root element
:target #news:target Selects the current active #news element (clicked on a URL containing that anchor name)
:valid input:valid Selects all <input> elements with a valid value
:visited a:visited Selects all visited links

All CSS Pseudo Elements

Selector Example Example description
::after p::after Insert content after every <p> element
::before p::before Insert content before every <p> element
::first-letter p::first-letter Selects the first letter of every <p> element
::first-line p::first-line Selects the first line of every <p> element
::selection p::selection Selects the portion of an element that is selected by a user



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