<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Dynamic Form</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            background-color: #f0f2f5;
        }
        .container {
            max-width: 600px;
            margin: 50px auto;
            padding: 20px;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        button {
            padding: 10px;
            border: none;
            border-radius: 5px;
            background-color: #007bff;
            color: white;
            font-size: 1em;
            cursor: pointer;
            margin-top: 10px;
        }
        button:hover {
            background-color: #0056b3;
        }
        .form-group {
            margin-bottom: 15px;
        }
        .form-group label {
            display: block;
            margin-bottom: 5px;
        }
        .form-group input, .form-group select {
            width: 100%;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 5px;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>Dynamic Form</h1>
        <form id="dynamicForm">
            <div id="formFields">
                <!-- Dynamic fields will be added here -->
            </div>
            <button type="button" onclick="addField()">Add Field</button>
        </form>
    </div>
    <script>
        let fieldCount = 0;

        function addField() {
            fieldCount++;
            const formFields = document.getElementById('formFields');
            const newField = document.createElement('div');
            newField.className = 'form-group';
            newField.innerHTML = `
                <label for="field${fieldCount}">Field ${fieldCount}</label>
                <input type="text" id="field${fieldCount}" name="field${fieldCount}" placeholder="Enter value">
            `;
            formFields.appendChild(newField);
        }
    </script>
</body>
</html>