> I've yet to find another UI framework as powerful or quick to develop in as HTML/CSS - and the performance is looking really good in the browser. Really? Unt

> I've yet to find another UI framework as powerful or quick to develop in as HTML/CSS - and the performance is looking really good in the browser. Really? Until a couple of months ago with the advent of flexbox, you couldn't reliably do columns that fit dynamically to the browser window (frameworks like Bootstrap simply define three different window sizes and switch between them, rather than allowing for fluid resizing) as well as you can in every other UI framework I've used, never mind vertical layout. (See all the hacks for "sticky footers" over the past decade.)