How to test website for large screens?

1. How do I test apps on different screen sizes?
2. How do I make my website compatible with all screen resolutions?

How do I test apps on different screen sizes?

One way: Use the pop-up feature on your phone to open the app in the pop-up and change its size then, the second way change the device preview inside the android studio for the layout you want to test to see how it would render.

How do I make my website compatible with all screen resolutions?

Now if you were to design a web site for all resolutions you need to make a table with width and height 100%, so that whatever the screen resolution may be the web page will scale to fit the page. It will be 100% of the screen resolution or whatever percentage you choose to give it.