Possibly a setting which says if width > X, go vertical in CSS, where X can be configured by user/admin, should do the trick I think. And it won’t be any different than how CSS generally moves divs around based on the width of the screen. This way, small screens like mobile phones would continue to operate as normal. But, you get the option to utilize the bigger width provided by laptops and desktops, depending upon how wide the user’s browser window is.