Class Selector in HTML & CSS with Examples | Complete Guide
This Blog You Will Learn
ஃ what is a Class Selector
ஃ Why Class Selector is important.
ஃ structure diagram examples
ஃ Why Class Selector is important.
ஃ Rules for Class Name.
ஃ Examples
ஃ Output
ஃ Examples
ஃ Output
what is a Class Selector in HTML & CSS
✅css apply the same style to many elements example- multiple buttons, paragraphs, or card.
✅class element is group multiple element to apply same style or behavior.
✅class can be use many element.
✅ denoted by dot ( . ) symbol use before the class name.
✅A class selector is used css to apply styles to multiple HTML element that share same class name.
How Class selector works (concept)
Syntax of HTML <class> tag
<div class="example">.......</div>
ஃ structure diagram examples
Why Class Selector is important.
- Reduce repeated css code
- Makes reusable style
- Improve maintainability
- Help build consistent layouts.
- HTML code keep clean
Rules for Class Name.
- not use spaces (not spaces allowed)
- case-sensitive
- not start with number.
- use meaningful names
what is a Class Selector in HTML & CSS
Example
Step By Step Explanation
Explain Program
Step 1]
<!DOCTYPE html>
- This declare the document type.
- browser that the document is written in html
Step 2 ]
<html>.... . </html>
- html is the root element of the html page.
- Every thing inside it is part of the webpage.
Step 3]
- <head> section
- head section contains metadata about page. not visible on the page itself.
- <title> tag title section set the title of the page shows the browser tab.
2. CSS Style
. header css rule all element with class name header.
class is not unique
.header { . . . }
- .symbol represent selecting class element .
- .header :- HTML element .
- background-color :- set the background color.
- color :- set text color.
- text-align : center :- text center element.
- padding: 20px :- 20 pixels of space inside element. (top, bottom, right, left)
Step 4]
<body>
- < body> tag contains all the content visible to webpage.
- <body> tag contains all the visible content of the page.
- inside <body> show the browser screen.
Step 5]
- <h2> :- heading tag .
- <P> :- create a paragraph.
- <class="header"> :- unique identifier name
- CSS <style> :- section style element class.
header id attribute appears
- background -color
- color
- text-align
- padding
Step 6]
closing the Tag
Output
FAQ Section
A class selector is used to apply styles to one or more HTML elements using a class attribute. In CSS, it is defined using a dot (.) followed by the class name. This allows developers to style multiple elements with the same design efficiently.
To use a class selector, first assign a class to an HTML element using the class attribute, then define it in CSS using a dot (.)
Class Selector Example:-
<p class="text">Hello Friends </p>
.text {
color: blue;
}
Class selector can be used multiple times on different elements
ID selector is unique and used only once per page.Class selectors are more flexible, while ID selectors are used for specific elements.
Class selectors help maintain clean and reusable code. They allow developers to apply consistent styling across multiple elements, making website design faster, scalable, and easier to manage.
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