Sizing elements to percentage of screen width/height

Question

Is there a simple (non-LayoutBuilder) way to size an element relative to screen size (width/height)? For example: how do I set the width of a CardView to be 65% of the scree

Answer 1

This might be a little more clear:

double width = MediaQuery.of(context).size.width;

double yourWidth = width * 0.65;

Hope this solved your problem.