Mobile view of downloads shows inactive ‘hamburger’ menu

[spdegabrielle]

Not present in desktop view

[jryans]

I looked around at this for a little while... I guess the toggle menu comes from https://github.com/racket/plt-web/blob/e06442a897ede8df9706555eee51734a9cecf4ab/plt-web-lib/layout.rkt#L153-L156 when page-style? is #t (the default), but I'm not yet sure if that should be set to #f (which may have other implications) or if some CSS should be tweaked to keep the menu hidden.