In my current HTML code, I have 3 "col-md-4" divs within a row, each with a container--wrap to fill the webpage with 3 equally sized containers. These divs are placed inside another div with class = container-fluid. When I resize the window, the containers stack on top of each other only when I make the window much smaller, about 2/3 in size. On mobile, the containers remain small and do not stack at all. How can I adjust the code to allow these containers to stack more easily and automatically on mobile devices? Additionally, the navbar on my site looks fine on mobile but remains small and collapsed. How can I make it larger on mobile?
I am looking to achieve a similar layout to cov19.cc, where the navbar is enlarged on mobile and the containers stack on top of each other rather than side by side. Any suggestions would be appreciated. Thank you!