My current layout design is causing an issue where the lower green box extends beyond the total height of the entire box. I've provided a rough version of my code on codepen. Using the Bulma framework, my goal is to align the height of the left column with that of the right column, ending at the black line and implementing a scroll bar on the right-hand side.
I attempted fixing this by setting a specific view height for the lower box and enabling overflow scrolling, but resizing causes problems. Alternatively, I can use JavaScript to dynamically adjust the lower box's height based on the left column minus the top box height. However, I'm exploring if there is a more efficient CSS solution available.