How Can I Create Multi-Level Drop-Down Menus Using Only CSS?

Creating Multi-Level Drop-Down Menus with Pure CSS

CSS-only multi-level drop-down menus offer a clean and accessible way to organize complex navigation structures on a website. While numerous approaches exist, the optimal solution varies depending on the desired aesthetics and functionality.

One effective technique involves utilizing a nested list structure and positioning the sub-menus absolutely:

.third-level-menu
{
    -
    position: absolute;
    top: 0;
    right: 150px;
    width: 150px;
    list-style: none;
    padding: 0;
    margin: 0;
    display: none;
}

This code defines the third-level sub-menu, which will be positioned to the right of its parent menu item.

.second-level-menu
{
    -
    position: absolute;
    top: 30px;
    left: 0;
    width: 150px;
    list-style: none;
    padding: 0;
    margin: 0;
    display: none;
}

Similarly, this code defines the second-level sub-menu, which will be positioned below its parent menu item.

.top-level-menu
{
    -
    list-style: none;
    padding: 0;
    margin: 0;
}

This code defines the top-level menu, which will contain the parent menu items.

To display the sub-menus when their parent menu item is hovered over:

.top-level-menu li:hover > ul
{
    -
    /* On hover, display the next level's menu */
    display: inline;
}

Additionally, styling can be applied to the menu links and list items for visual customization.

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