<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CSRF Test</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
        }

        .test-section {
            margin: 20px 0;
            padding: 20px;
            border: 1px solid #ddd;
            border-radius: 5px;
        }

        button 