Types of Selector in CSS & How to Use CSS Selector in HTML?

CSS

Posted on August 2, 2021April 13, 2022 | by rajeshkumar

Post Views: 3

There are five types of Selector in CSS.

Simple selectors (select elements based on name, id, class)
Combinator selectors (select elements based on a specific relationship between them)
Pseudo-class selectors (select elements based on a certain state)
Pseudo-elements selectors (select and style a part of an element)
Attribute selectors (select elements based on an attribute or attribute value)

The CSS element Selector–

ID
Class
Element

Id Selector–

<html>
	<head>
		<style>
		          #id_selector {
			              color: red; font-size: 60px;
			         }
		</style>
	</head>
	<body>
		<p id="id_selector">Hello World!</p>
		<p>This paragraph is not affected by the style.</p>
	</body>
</html>

Class Selector–

Universal-

<html>
	<head>
		<style>
			.red {color: #FF0000; font-size: 60px;}
		</style> 
	</head>
	<body>
	            <h2 class="red">I am Heading</h2>
	            <p class ="red">I am first paragraph</p>
	            <p>I am second paragraph</p>
	</body>
</html>

Element Specific-

<html>
	<head>
		<style>
			p.red {color: #FF0000; font-size: 60px;}
		</style> 
	</head>
	<body>
	            <h2 class="red">I am Heading</h2>
	            <p class ="red">I am first paragraph</p>
	            <p>I am second paragraph</p>
	</body>
</html>

Use Two or more class–

<html>
	<head>
		<style>
			p.red {color: #FF0000;}
			p.look{font-size: 60px;}
			.algn{text-align: center;}
		</style> 
	</head>
	<body>
	                    <h2 class="algn">I am Heading</h2>
	                    <p class ="red look">I am first paragraph</p>
	                    <p class="red algn">I am second paragraph</p>
	</body>
</html>