How to make a mobile friendly website?

Question

How do I make a website that fits an iphone screen? Also does Visual Studio Code have any way of testing on mobile? how do I know if it fits? im using html and css.

Answer 1

using a framework like bootstrap for responsive design should do the trick. may not look as attractive as on a wide pc screen, but fits on every screen.

Answer 2

Combination CSS Flexbox and Grid layout.