body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
    color: #333;
}
.container {
    max-width: 800px;
    margin: 20px auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
h1 {
    text-align: center;
    color: #007BFF;
}
.question-block {
    margin-bottom: 20px;
}
.question {
    font-size: 18px;
    font-weight: bold;
}
label {
    margin-left: 10px;
    font-size: 16px;
}
.submit-button, .retry-button {
    display: block;
    margin: 20px auto;
    padding: 10px 20px;
    font-size: 16px;
    color: #fff;
    background-color: #007BFF;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
}
.submit-button:hover, .retry-button:hover {
    background-color: #0056b3;
}
.score {
    text-align: center;
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
}