The classic tree view, we all know it, it’s used everywhere and it definitely can be useful in the right context. However, most of them required JavaScript support. CSS Ninja has written a tutorial in order to teach us how to create a Pure CSS Collapsible Tree Menu.

Based on testing, this will work in any CSS3 selector supporting browser. It has been tested on Firefox 1+, Opera 9.6+, Safari 4+, iPhone/iPod Safari, Chrome 1+, Android and IE9+.

This technique will cater for a large amount of sub folders and files. It’s governed by your screen real estate and even then it’ll apply scroll bars to the document when the tree structure gets too long or wide.

You can also check out Fully Interactive jQuery File Tree, Javascript Treeview Component, and Treeview jQuery Plugin we have mentioned before.

Requirements: CSS3 selector supporting browser
Demo: http://www.thecssninja.com/css/css-tree-menu
License: License Free