The site is here:
Home - Bright LDN
When you view it on iOS in a narrow window, the top nav collapses into a pop-out menu.
The problem: the animation of the menu is really glitchy. It slowly reveals itself, it disappears too soon. This functionality is part of the Wordpress theme (DMS 2) that I'm using, but I don't know if it can be fixed or if I should scrap it for a similar solution.
Can anyone help diagnose this and give some direction?