Expand width of sign up form

I am trying to expand the width of my sign up form using custom CSS. I added custom css as outlined here but my form does not look any wider.

To be specific - my custom CSS is below:

:root { --prompt-width: 800px; --form-max-width: 800px; }

Hi @amanda.milberg,

Welcome to the Auth0 Community!

The problem is most likely related to where the custom CSS is being placed, or a minor typo in one of the variable names. To reliably override Universal Login variables, the CSS must be included within the Page Template HTML, not just the Custom CSS field.

You can find more about it at Customize Universal Login Page Templates.

Could you please specify more clearly where you are entering this code, and what the corresponding HTML page is for us to use?

Have a good one,
Vlad