body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

header {
    background-color: #333;
    color: white;
    padding: 10px 0;
    width: 100%;
    text-align: center;
}

main {
    padding: 20px;
    background-color: white;
    width: 50%;
    margin-top: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

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

input, textarea {
    padding: 10px;
    margin: 10px 0;
    width: 100%;
}