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How to Create Classes using CSS ?
  • Difficulty Level : Expert
  • Last Updated : 31 Mar, 2021

A class in CSS is a group of CSS property like font-style, height, width, color, etc. which is when used as an attribute in an HTML tag, the CSS styling is applied to that tag. 

Syntax:

.class_name {
    CSS attributes;
}

A period character or symbol “.” is used which is followed by the class name. Then opening and a closing parenthesis “{ }” is given within which CSS styling is declared.  

Explanation:  <style/> tag is used to define CSS styling within a .HTML file. A period character “.” is used to declare a class which is followed by the class name which is “green-text” in our example. Then we give opening and closing parenthesis “{ }” within which we define CSS properties. 

HTML




<style>
   
.green-text {
  /* CSS properties*/
  color: green;
  font-size:250%;
}
   
</style>

Assigning our CSS class to an HTML tag:

Explanation: In the below implementation we have assigned our “green-text” CSS class to the </p> tag, which will apply our CSS styling to the contents of that </p> tag.



HTML




<!DOCTYPE html>
<html>
<head>
<style>
/*CSS class*/
.green-text {
  color: green;
  font-size:250%;
}
</style>
</head>
<body>
   
  <!-- class "green-text" is assigned to the </p>
 tag -->
<p class="green-text">Welcome to GeeksforGeeks</p>
 
 
</body>
</html>

Output:

As you can see we have successfully created a class using CSS and assigned it to an HTML element. For further knowledge about CSS, selectors go through this article.




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