Somewhat unrelated to this article, but there was once a post about mobile navigation menu. The post was by a UK web dev company, and they talked about how they

Somewhat unrelated to this article, but there was once a post about mobile navigation menu. The post was by a UK web dev company, and they talked about how they created a mobile navigation which is located at the bottom of viewport, and when clicking a hamburger menu at the bottom it would trigger a slide out menu. I I've been looking for that post or that company's website for months now but can't find it. Does anyone remember or have any idea who it was?