The :nth-child() pseudo-class selects and adds styles to elements based on their index.
The :nth-child() can be specified by a number, a keyword, or a formula.
Keyword values
odd
Represents those elements whose numeric position is odd (e.g 1, 3, 5, 7 etc.).
even
Represents those elements whose numeric position is even (e.g 2, 4, 6, 8 etc.).
Functional notation
<An+B>
Represents those elements whose numeric position matches the pattern An+B (for every positive integer or zero value of n). The first element’s index is 1, and n in the formula starts from 0. The values A and B must be integers.
Version
Syntax
:nth-child() {
css declarations;
}Example of the :nth-child selector:
<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
p:nth-child(3) {
background: #ccc;
}
</style>
</head>
<body>
<h2>:nth-child selector example</h2>
<div>
<p>Paragraph 1</p>
<p>Paragraph 2</p>
<p>Paragraph 3</p>
<p>Paragraph 4</p>
</div>
</body>
</html>Example of "odd" and "even" keywords:
<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
p:nth-child(odd) {
background: #1c87c9;
color: #eeeeee;
}
p:nth-child(even) {
background: #666666;
color: #eeeeee;
}
</style>
</head>
<body>
<p>The first paragraph.</p>
<p>The second paragraph.</p>
<p>The third paragraph.</p>
</body>
</html>Browser support
|
|
|
|
|
|---|---|---|---|---|
| 4.0+ | 12.0+ | 3.5+ | 3.2+ | 10.0+ |
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