User blog comment:DaNASCAT/Technical Update: August 15, 2016/@comment-5558012-20160816145714/@comment-26402117-20160816152024

It clocks in at 500px tall. That and the dark theming make it reminiscent of a mainpage element when it is intended to be a navigation bar.

Also, bars and footers are traditionally at least 10:1 width:height.