How can HTML validation tools like W3C Validator be used to identify and fix errors in HTML code related to form elements and attributes?
HTML validation tools like W3C Validator can be used to identify errors in HTML code related to form elements and attributes by pointing out missing or incorrect attributes, invalid values, or other syntax errors. To fix these errors, you can refer to the error messages provided by the validator and make the necessary corrections in your HTML code. ```html <!DOCTYPE html> <html> <head> <title>Form Validation</title> </head> <body> <form action="submit.php" method="post"> <label for="username">Username:</label> <input type="text" id="username" name="username" required> <label for="password">Password:</label> <input type="password" id="password" name="password" required> <input type="submit" value="Submit"> </form> </body> </html> ```