body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

#quiz-container {
    width: 600px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0px 0px 10px 2px rgba(0,0,0,0.1);
    padding: 20px;
}

#question {
    font-size: 20px;
    margin-bottom: 20px;
}

.option {
    margin: 10px 0;
    background-color: #f9f9f9;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ddd;
    cursor: pointer;
}

.option:hover {
    background-color: #e0e0e0;
}

button {
    padding: 10px 20px;
    border: none;
    background-color: #5c9dcd;
    color: white;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    margin: 10px 0;
}

button:hover {
    background-color: #4c8cb5;
}

button[disabled] {
    background-color: #ddd;
    cursor: not-allowed;
}