This is being difficult, and I will explain why, I have two divs as in the print below, the site is responsive, they must float side by side, however, these divs have triangular tips, and they must scale horizontally until a given breakpoint that I determine in the case the div of the red color on small screens xs: 320px would have 100% width and the second I would hide. but on large lg: 1200px screens, they would have to stay the way it is in print, but I do not want it to break if the monitor is a little smaller than 1200.
I've tried it in some ways here but the dark block always breaks.
I would like suggestions.
Look at the code I made: link