Component Communication in React: Complete Beginner's Guide (2026)

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  What is Component Communication in React? Introduction Component Communication is the process of sharing data, functions, and events between React components so they can work together, respond to user interactions, and keep the application's user interface updated. When you build a React application, you don't create everything inside a single file. Instead, you divide the application into small, reusable components. Each component has its own responsibility. For example, one component may display a navigation menu, another may show a list of products, while another handles the shopping cart or a login form. Although these components are independent, they still need to work together. A product component must inform the shopping cart when a user adds an item. A search box must send the entered keyword to the product list so it can display matching results. A login form must notify the main application after a successful login. The process that allows these components to excha...
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What is External CSS in HTML? Complete Beginner Guide

 


External CSS


1]  External css refers to Cascading style sheets that are store that are stored in separate file.

2]  External CSS  linked to HTML documents using the  '<link> ' element.

3]  External css method allows for the separation of the presentation  (style) from the
    content (html structure ) 

4]  External css is use easier to manage and maintain large-scale  website.

5]  Create a css file Save your  css rules in a separate file with a  ' .css ' extension.
        Example - file name :- ' styles.css '

External  css 

Example :-


7] Link the css file to your Html  document :- 
      
      1]    <head>  section of your html document add.
      2]   <link> element  with the ' rel ' attribute  set  to " stylesheet " and .
      3]  ' href ' attribute  pointing to the location of your css file.


External html  

Example :-

html code
<!DOCTYPE html>
<html>
<head>
      <title>External CSS</title>
  <link rel ="stylesheet" href="styles.css">
</head>
<body>
<div>
        <h1>Learn programming Language</h1>
        <p> easy to undestand html ,css
js in webdesigningtheory.blogspot.com</p>
   
    </div>
</body>
</html>

External CSS

Example :-


/* style.css */
body
{
}
h1
{
    color :aqua;
 }
 h2
{
    color:antiquewhite;
 }
.container
{
    width: 80%;
    margin:auto;
}

External CSS

Output :-

External CSS EXAMPLE output










Related Post :-

html Dom getElementsByClassName()

php $_POST Method

how to create a order form

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