Thanks for reaching out.
I understand you are trying to customize the flow of Sign-in/Sign-up/Password-reset in Azure AD B2C.
The only way to achieve this using JavaScript and CSS embedded in the custom HTML template for the flow. With the help of CSS, you can simplify the page by customize the buttons and controls.
To customize email verification step, you can use jQuery to listen to the actual XHR requests that B2C sends out, and then binding to their responses. You can enable JavaScript in Azure AD B2C to customize the user journey.
Hope this will help.
Thanks,
Shweta
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