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What is the usage of odd and even in css3

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Apr 28, 2022 pm 04:02 PM

css3

In CSS3, odd and even are used as keywords in pseudo-class selectors to select specified elements. odd represents odd elements and even represents even elements; odd and even are often used with ":nth-child(n )" selector, the syntax is "element: selector (odd or even) {css style code}".

What is the usage of odd and even in css3

The operating environment of this tutorial: Windows 10 system, CSS3&&HTML5 version, Dell G3 computer.

What is the usage of odd and even in css3

odd represents an odd number and even represents an even number.

odd and even are often used to select specified elements in pseudo-class selectors.

The example is as follows:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>菜鸟教程(runoob.com)</title> 
<style> 
p:nth-child(odd)
{
background:#ff0000;
}
p:nth-child(even)
{
background:#0000ff;
}
</style>
</head>
<body>
<h1 id="This-nbsp-is-nbsp-a-nbsp-heading">This is a heading</h1>
<p>The first paragraph.</p>
<p>The second paragraph.</p>
<p>The third paragraph.</p>
<p><b>注意:</b> Internet Explorer 8 and以及更早版本的浏览器 :nth-child()选择器.</p>
</body>
</html>

Output result:

What is the usage of odd and even in css3

(Learning video sharing: css video tutorial)

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