[jonnyscholes]

I assume you're talking about CSS columns? Again they're not designed for layout - it's designed specifically for newspaper style columns of text where it doesn't matter which piece of text flows into which column. To use it for layout requires hacks or luck to adhear closely to designs. Pre-grid and flex I spent many hours of my life dealing with oddities around CSS columns - my life is in a much better place now not having to resort to it!