Role of CSS :optional Selector

Use the CSS :optional selector to style <input> elements with no "required" attribute

Example

You can try to run the following code to implement the :optional selector:

Live Demo

<!DOCTYPE html>
<html>
   <head>
      <style>
         input:optional {
            background-color: blue;
         }
      </style>
   </head>
   <body>
      <form>
         Subject: <input type = "text" name = "subject"><br>
         Student: <input type = "text" name = "student" required><br>
      </form>
   </body>
</html>
Updated on: 2020-07-01T09:01:11+05:30

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