.category-tree, .category-tree ul {
    list-style: none;
    padding-left: 20px;
}

.category-tree li {
    margin: 5px 0;
}

.category {
    font-weight: bold;
    cursor: pointer;
}

.items {
    padding-left: 10px;
}

.item-link {
    color: #007bff;
    text-decoration: none;
}

.item-link:hover {
    text-decoration: underline;
}