body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

h1 {
    color: #333;
}

.section {
    border: 2px solid #4CAF50;
    border-radius: 5px;
    margin-bottom: 20px;
    padding: 15px;
    background-color: #f9f9f9;
}

.category {
    font-weight: bold;
    color: #4CAF50;
    margin: 10px 0;
}

.question {
    margin-top: 10px;
    border: 1px solid #2196F3;
    border-radius: 5px;
    padding: 15px;
    background-color: #e3f2fd;
}

.answer {
    margin-left: 20px;
    margin-top: 10px;
    background-color: #fff;
    border: 1px solid #2196F3;
    border-radius: 5px;
    padding: 10px;
    cursor: pointer;
}

.answer:hover {
    background-color: #f1f1f1;
}

.selected {
    background-color: #AED581;
}

button {
    margin-top: 20px;
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}