Adapt FW v4 - Only cover the dragging area

[simondate]

I'm assuming that this change was made in v4+. The buttons are currently unreachable as the drag area covers them. See this gif.

The fix is to move position: relative from .dragndrop-inner to .dragndrop-container

[simondate]

After looking at this in a separate enviorment. I realised the issue was that I missing position: relative on the .buttons class. When this is present the button is accessible.

However, I still think this change might be worthwhile. Just so that drag area is contained to where it needs to be only.