Error in displaying tree

[jinu227]

I have implemented a tree structure in JavaScript(tree.html). But when I am implementing the same tree in form.html, the tree is getting displayed horizontally instead of the normal vertical view.

However, when I comment the href to style.css in form.html, the tree is displayed perfectly

How can I rectify the problem? I am attaching a zip file which shows the implementation.

Regards.

[holyhttp]

It appears some style in the style.css override some of the settings that handle the tree display. Just make some change in the CSS selectors names