body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f7f8;
    color: #333;
    text-align: center;
    margin: 0;
    padding: 0;
}

#quiz-container {
    max-width: 600px;
    margin: 50px auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    padding: 30px;
}

h1 {
    color: #358ca0;
}

.hidden {
    display: none;
}

button {
    background-color: #358ca0;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
    margin-top: 20px;
}

button:hover {
    background-color: #2d7c8f;
}

#options button {
    display: block;
    width: 100%;
    margin: 10px 0;
}