How to use CSS pseudo-class nth-child-CSS Tutorial-php.cn

How to use CSS pseudo-class nth-child

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Release： 2018-12-08 17:48:19

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There is a pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child in CSS. How to use this pseudo-class? The next article will introduce to you how to use the pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child in CSS. Let’s take a look at the specific content.

How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child

How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child is a pseudo-class that adds conditions to the selector and allows you to apply styles to the nth (nth) child element.

How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child becomes very useful when you want to alternate background colors for easy viewing in a table with many items.

Let’s take a look at how to use How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child

How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child is described as follows

元素:How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child(值){样式的内容}

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In addition to numbers, 2n 1 and some mathematics Outside of expressions, even (even), etc. can be set as values.

Applies only to even numbers: 2n or even
Applies only to odd numbers: 2n 1 or odd

There are other situations, let’s look at specific application examples

First the HTML code is as follows

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="sample.css" type="text/css">
</head>
<body>
<ul type="square">
<li>列表项目1</li>
<li>列表项目2</li>
<li>列表项目3</li>
<li>列表项目4</li>
<li>列表项目5</li>
<li>列表项目6</li>
</ul>
</body>
</html>

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The running effect is as shown in the figure below

How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child

Then use nth - child, and Set it up so that the background color is #add8e6 and only applies to specific list items.

Situation when even number is selected

The value of How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child is set to even or 2n

CSS code

ul li:How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child(even){
	background-color: skyblue;
}

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Display the following effect on the browser

How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child

When an odd number is selected

The value of How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child is set to odd or 2n 1

CSS code

ul li:How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child(odd){
	background-color: skyblue;
}

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displays the following effect on the browser

How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child

Select only the first Case of n elements

Enter the item number to be applied to the How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child value. We enter 3 here.

CSS code

ul li:How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child(3){
	background-color: skyblue;
}

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The display effect on the browser is as follows

How to use CSS pseudo-class nth-child

Select the nth and above Element case

n to nth - child Enter the value of the item to start applying. Here is n 4.

CSS code

ul li:How to use CSS pseudo-class How to use CSS pseudo-class How to use CSS pseudo-class nth-child(n+4){
	background-color: skyblue;
}

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The effect when running on the browser is as follows

How to use CSS pseudo-class nth-child

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