Custom UI for Password Reset without using the change-password-widget-container

Hi. I have already created a custom built Login UI by following the SDK for web. However, I am quiet lost here on how to customize the password reset form without using the change password widget.

On this doc:
it stated that Edit the Password Reset Page:
Once you’ve enabled the customization toggle for the Password Reset Page, you can use the built-in text editor to change its HTML, style the page using CSS, and change the JavaScript used to retrieve and display custom variables. Be sure to Save any changes you make.

But how can I customize/ style it without going inside this div id=“change-password-widget-container”?