body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background-color: #f4f4f4;
}

nav {
    margin-bottom: 20px;
}

nav a {
    margin-right: 15px;
    text-decoration: none;
    color: #333;
    font-weight: bold;
}

h1 {
    color: #222;
}

.question {
    background: white;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid #ddd;
}

button {
    padding: 10px 15px;
    margin-right: 10px;
    border: none;
    cursor: pointer;
}

button:hover {
    opacity: 0.8;
}

#results {
    margin-top: 20px;
    padding: 15px;
    background: white;
    border-radius: 8px;
}