With version 4, Bootstrap the popular CSS framework has rewritten its grid systems using CSS Flexbox model. That alone is a huge win for all of us.
As I dive in through their detailed documentation, I see the numerous new layout possibilities that it brings which will be very easy to create just by dropping divs & their pre-defined classes.
The reboot CSS reset is also very thoughtful, it eliminates the need to think of adding any other element resets to your custom CSS file.
Just add the minified “reboot” & “grid” CSS files to your project & you’re ready to begin responsive development!