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Summary of how to use pseudo elements in css (code)

不言Original: 2018-08-24 11:55:081355browse

This article brings you a summary (code) of how to use pseudo elements in CSS. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Set the first letter of the text to a special letter

<!DOCTYPE html >
<html>
	<head>
		<meta charset="utf-8"> 
		<title>自学教程(如约智惠.com)</title> 
		<style >
			p:first-letter {
				color:#ff0000;
				font-size:xx-large;
			}
		</style>
	</head>
	<body>
		<p>你可以使用"first-letter"伪元素向文本的首字母设置特殊样式；</p>
	</body>
</html>

Set the first line of text to a special letter

<!DOCTYPE html >
<html>
	<head>
		<meta charset="utf-8"> 
		<title>自学教程(如约智惠.com)</title> 
		<style >
			p:first-letter {
				color:#ff0000;
				font-size:xx-large;
			}
		</style>
	</head>
	<body>
		<p>你可以使用"first-letter"伪元素向文本的首字母设置特殊样式；</p>
	</body>
</html>

Set the first letter of the first line of text to special

<!DOCTYPE html >
<html>
	<head>
		<meta charset="utf-8"> 
		<title>自学教程(如约智惠.com)</title> 
		<style >
			p:first-letter{
				color:#ff0000;
				font-size:xx-large;
			}
			p:first-line {
				color:#0000ff;
				font-variant:small-caps;
			}
		</style>
	</head>
	<body>
		<p>你可以结合使用"first-line"和"first-letter"伪元素向文本的首行和首字母设置特殊样式。</p>
	</body>
</html>

Use: Insert some content before an element

<!DOCTYPE html >
<html>
	<head>
		<meta charset="utf-8"> 
		<title>自学教程(如约智惠.com)</title> 
		<style >
			h1:before {content:url(smiley.gif);}
		</style>
	</head>
	<body>
		<h1>This is a heading</h1>
		<p>The :before pseudo-element inserts content before an element.</p>
		<h1>This is a heading</h1>
		<p><b>注意:</b>仅当 !DOCTYPE 已经声明 IE8 支持这个内容属性</p>
	</body>
</html>

Usage: Insert some content after an element

<!DOCTYPE html >
<html>
	<head>
		<meta charset="utf-8"> 
		<title>自学教程(如约智惠.com)</title> 
		<style >
			h1:after {content:url(smiley.gif);}
		</style>
	</head>
	<body>
		<h1>This is a heading</h1>
		<p>The :before pseudo-element inserts content before an element.</p>
		<h1>This is a heading</h1>
		<p><b>注意:</b>仅当 !DOCTYPE 已经声明 IE8 支持这个内容属性</p>
	</body>
</html>

Related recommendations:

css pseudo-class, pseudo-element_html/css_WEB-ITnose

CSS pseudo-class pseudo-element_html/css_WEB-ITnose

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