Demo
http://www.wysiwygwebbuilder.com/support/perspectivemenu.html


Download demo version (save disabled)
Perspective Menu Extension


Requirements:
WYSIWYG Web Builder 12.1 or higher
Perspective Menu (PAID)

This extension is an experimental menu that uses CSS3 3D transforms to push the page away to display a menu. The menu can be activated by clicking/touching the ‘hamburger’ button.

Note: Internet Explorer has limited support for 3D transforms, so it may not work as intended in this (out-of-date) browser.
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Buy full version via Avangate for $5.95
https://secure.avangate.com/order/checkout.php?PRODS=4717053
NAVIGATION EXTENSIONS PACK (Volume 2) - DISCOUNT
This extension is also part of the Navigation Extensions Pack - Volume 2 which includes 11 commercials menu extensions for only $24.95!