UX solution for dashboard with scrollable content boxes?

So i have come up with a UI design for a dashboard, that is constructed like the following:

the dashboard has a scroll activated depending on the the total height of the added boxes, the issue here is that these boxes are resizable therefore the these boxes also have scrolls (depending on the content). So sometimes when the users intended to scroll the down to see the boxes in the dashboard, they scrolling down within the content boxes instead. Currently there are 20px margin between the boxes, but it still seems to be annoying for the user to try to target these spaces when wanting to scroll within the dashboard.

So pretty much, it results in shitty experience. Not sure how if there any best practices for handling these situations for the dashboard, but any tips or links to other pages that have solved this issue are appreciated.