Here text Dr. Norman Borlaug is not changing its size while i change the browser size.
Text does not automatically scale, this is not a thing that happens unless you add rules to make it happen. https://css-tricks.com/fun-viewport-units/
You might be interested in this. It will resize anything, not just text. Of course, you need only use pieces of it, or just adopt the basic idea and develop your own approach.
Making Player and border responsive and proportionate