Yeah, but this is not what we actually want to achieve. We already did that. 
By hiding the button with CSS, you still force the modal to appear. Previosuly, by clicking the “Log In” button, it redirected to our OAuth2 server, and user was logged in with a single flow. Now, they see a modal and have to click in “with OAuth2”.
Is it possible to forward users to the OAuth2 when clicking “Log In”, having 2 auth options available?
With two options enabled, and hidding with CSS, users see this:
Ideally, they should be redirected to the OAuth2 flow as soon as they click the “Log In” button.