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Role of margin property with value auto using CSS


The margin property with value auto is used to horizontally center the element within its container. You can try to run the following code to implement margin: auto;

Example

<!DOCTYPE html>
<html>
   <head>
      <style>
         div {
            width: 200px;
            margin: auto;
            border: 2px dashed blue;
         }
      </style>
   </head>
   <body>
      <p>This is demo text</p>
      <div>
         This is horizontally centered because it has margin: auto;
      </div>
   </body>
</html>

Output

Role of margin property with value auto using CSS