body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 20px;
}
.container {
    max-width: 400px;
    margin: auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
}
.feedback {
    margin-top: 10px;
    font-weight: bold;
}
.correct {
    color: green;
}
.incorrect {
    color: red;
}
.option-button {
    display: block;
    width: 100%;
    padding: 10px;
    margin: 5px 0;
    border: none;
    background-color: #f0f0f0;
    cursor: pointer;
    border-radius: 5px;
}
.option-button:hover {
    background-color: #ddd;
}
.selected {
    background-color: #cce5ff;
}
.submit-button {
    margin-top: 10px;
    padding: 10px 20px;
    border: none;
    background-color: #007bff;
    color: white;
    cursor: pointer;
    border-radius: 5px;
}
.submit-button:hover {
    background-color: #0056b3;
}