body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
    color: #333;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 1rem;
    text-align: center;
}

main {
    margin: 2rem auto;
    max-width: 600px;
    padding: 1rem;
    background: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    margin: 0 0 1rem;
}

form {
    display: flex;
    flex-direction: column;
}

textarea, input, button {
    margin-bottom: 1rem;
    padding: 0.5rem;
    font-size: 1rem;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}