.main-content {
    padding: 20px;
    background-color: #f9f9f9;
    margin: 20px;
    border-radius: 8px;
}

.main-content li {
    padding: 8px;
    margin: 5px 0;
}

.main-content a {
    text-decoration: none;
    /* color: #007BFF; */
}

.main-content ul ul {
    padding-left: 20px;
}

.main-content li:hover {
    background-color: #ddd;
}