Neat experiment, but this is not good design. Design is about solving problems. A menu is suppose to help you to quickly find and get to a specific section of your site. Why do I have to click on a thing to reveal the menu even though on my laptop there is enough space to show it all? And then I have to move my mouse all to the other side of the screen? Who is this for? Nothing wrong with experimenting with CSS, but…
> Who is this for ? This effect imitates a spotlight, which is cited on the page and quite relevant for a company in the arts domain
Tried it today on my PC (big screen) - the intro animation is slow - 6-10 FPS and clicking on the menu item to reveal the items is slow as well. I could hear my fan spinning up.
Not everyone uses the latest greatest Mx chipset.
This tells me they haven't done any testing. Basically 'this looks cool' and 'works on my machine'.