Can't (easily) horizontal scrolling

[git-avc]

With many columns and many cards ... is not so easy scrolling between columns ... maybe some bottom or top margin could help.

[pu-raihan]

You can press and hold shift (or ctrl) button then scroll using mouse to scroll horizontally if you're using desktop.
There's a scrollbar at the bottom if you can use that one.
We've implemented click-drag functionality (in develop). should be available in the next release.