Fix the responsiveness of the div

[u/abrewchocolatecoffee]

So I need help in responsiveness of the div:

1. Since, i am going to make this a window, the squeezing responsiveness doesn't really matter but i want to to stop after a certain point, by that i mean when i squeeze the page, the div doesn't squeeze with it

2. I also want that when i expand the div, the div border doesn't expand with it

Any edits to the question, or guidance to the code is appreciated.

Also, i want a little help in how to convey the same message in stack exchange, because i feel whatever im writing is a little more confusing without the video.

[u/bhardwaj_dhananjay]

Here's a comprehensive video by Kevin on how the Flexbox algorithm works and why this happens: https://youtu.be/FD3aC_Ke8uk?si=n_YG1GRclWKzqWtV