Simple Order Summary Without Grid

Hi,

I'm not used to the 'clamp' function. Is it a good practice and use case to use it this way?

.order { width: clamp(350px, 100vw, 22em); margin: 0 auto; background-color: white; border-radius: 1em; }

I want to figure out the optimum width of the main card container; regardless of the viewport.

Thanks!