There are several aspects you can customize about the login page:
Login Page Title
Login Page Subtitle
Login Page Image: An image shown at the top of the login card. It spans the width of the login card, and has a height of 192px. Choose Cover to fill the image area; this may crop the edges. Choose Contain to show the whole image; this may leave space around it. The card's width changes with the screen size, so there is no single image aspect ratio that fits every screen. Keep important text or details away from the edges and preview the login page on desktop and mobile.
Custom Login Button Label
Each of these settings can be customized by going to the Login Page Options section, then turning on the corresponding toggle and finally configuring the setting.