We have seen many navigation menu effects and today we have another one for you. This slide in nav menu with an off-trigger area was designed by Matthieu Bué. When you click on the hamburger icon the navigation menu slides into view on an angled off-canvas sidebar, which makes it a bit different from the usual menus that you might come across.
If you are having trouble with the pen, try the archived copy on GitHub
See the Pen UI with UX improvements with only CSS by Twikito (@Twikito) on CodePen.0