What are the potential drawbacks of nesting forms in HTML?

Nesting forms in HTML is not allowed and can lead to unpredictable behavior in different browsers. To solve this issue, ensure that each form is properly closed before starting a new one. If you need to group form elements together, consider using divs or fieldsets instead of nesting forms. 

<!-- Example of grouping form elements using divs instead of nesting forms -->
<form action="submit.php" method="post">
    <div>
        <label for="username">Username:</label>
        <input type="text" id="username" name="username">
    </div>
    <div>
        <label for="password">Password:</label>
        <input type="password" id="password" name="password">
    </div>
    <input type="submit" value="Submit">
</form>

Keywords

HTML forms nesting PHP validation

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