body {
    font-family: Arial, sans-serif;
    margin: 40px;
}

h2 {
    color: #2c3e50;
}

select option[disabled] {
    color: red;
}

button {
    padding: 8px 16px;
    font-weight: bold;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

label {
    display: block;
    margin-top: 10px;
}