I think it&#x27;s safe to say, at least from my view, that Bootstrap is the reason for it.  Bootstrap made this format easy and clean, and it works well with mobile.  Websites will look like this until someone comes out with the next thing that&#x27;s easier and&#x2F;or cleaner and&#x2F;or works better in mobile and then a couple years later THAT will be the format you&#x27;re seeing everywhere.  I don&#x27;t think this is a bad thing.  At least it&#x27;s clean and works well on mobile...