body {
    font-family: Arial, sans-serif;
    background: #f2f2f2;
    margin: 0;
    padding: 20px;
}

.container {
    width: 90%;
    max-width: 600px;
    background: white;
    padding: 20px;
    margin: auto;
    border: 1px solid #ddd;
    border-radius: 5px;
}

h1 {
    text-align: center;
}

.question {
    margin-bottom: 15px;
}

.question p {
    font-weight: bold;
}

label {
    display: block;
    margin: 3px 0;
}

button {
    width: 100%;
    padding: 10px;
    background: #4CAF50;
    color: white;
    font-size: 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background: #45a049;
}

#answer {
    margin-top: 15px;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
}