body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f9;
    margin: 0;
}

.flashcard {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    padding: 20px;
    text-align: center;
    width: 300px;
}

.content {
    margin-bottom: 20px;
}

.navigation button {
    background: #007BFF;
    border: none;
    border-radius: 4px;
    color: #fff;
    cursor: pointer;
    font-size: 16px;
    padding: 10px 20px;
    margin: 5px;
}

.navigation button:hover {
    background: #0056b3;
}