Bengisu

Hi all, I need help with fixing my simple layout. Everything is where it should be on a full-size browser (covering my entire screen). But when I play around with my window size, the text boxes start stacking on each other, and everything is squeezed instead of working responsively. Is there a specific command I should use? I attached one screenshot from the full-size browser with the correct layout and another where I decreased the window width. I appreciate any help. Thanks!