Chromium-based browsers on Mac have one important feature that I don't remember on Window—setting “Warn Before Quitting (⌘Q)”. If you check it, then Cmd + Q won't close browser immediately. It shows warning:
I've notice that if I use Windows calmly and carefully, it can work for a month without reboot and any freezes.
Seriously. Do not use.
If you start to use flexbox, then you won't be able to get rid of flexbox model. And your content will rule of your layout. You will get strange bugs with overflow, growing, shrinking, etc. flex-grow and flex-shring will be your friends forever. And each of your component will affect on his children without your participation.
So, don't do that. Listen Jake if you don't believe me.