Fullscreen on my large monitor it looks ridiculous. On my phone it seems ok, except firefox crashed at one point. Developer tools should really be desktop f

Fullscreen on my large monitor it looks ridiculous. On my phone it seems ok, except firefox crashed at one point. Developer tools should really be desktop first, instead of mobile first. I always wonder why we all use bootstrap as our goto so the site works on mobile, but then twitter barely works on a mobile browser.