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Horje.com PHP HTML CSS JAVAScript Editor.
Version: 1.0
PHP Version: 7.4.33
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<!DOCTYPE html> <html> <body> <h1>The input required attribute</h1> <form action="/action_page.php"> <label for="username">Username:</label> <input type="text" id="username" name="username" required> <input type="submit"> </form> </body> </html>