FEM-3-column-preview-card

I feel like I struggle a bit with making things responsive. I have so far started off making the desktop version first, and then moving on to the mobile view, and usually have to experiment quite a bit to make everything responsive and presentable. One problem I had for example was the fact that when stacked in the mobile view, elements that are stacked at the top simple get cut off, and there is no way of scrolling up there (due to being in a negative position I presume), which I was able to fix by removing my justify-content: center. However I feel like there has to be a more standard way of making it responsive? Any suggestions on best practices in this case?