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<!DOCTYPE html> <html> <head> <style> input:optional { background-color: lightgreen; } input:required { background-color: pink; border-color: red; } .req { color: red; } </style> </head> <body> <h1>Demo of :optional and :required</h1> <form> <label for="name">Name: </label><br> <input id="name" name="name" type="text" /><br> <label for="email">Email: <span class="req">*</span></label><br> <input id="email" name="email" type="email" required /><br> <label for="country">Country: </label><br> <input id="country" name="country" type="text" /> <p><span class="req">*</span> Required field</p> </form> </body> </html>
