[Need help] How to make the div element wider using classes provided in tailwindcss

[Ranzeplay]

This is my page currently:

I used these classes: m-8 p-8 bg-white rounded shadow hover:shadow-md to the outer div (Sign In).

And I want to make it wider and move it a little right (below the navbar), but I don't know how to make it with CSS classes provided in tailwindcss