Hi @Utkarsh Awasthi • Thank you for reaching out.
You will be required to create two set of HTML and CSS files for this purpose and host the files in a publicly accessible location, like Azure Blob storage or your publicly accessible hosting server.
You may create separate HTML/CSS files for these ContentDefinition IDs: api.error, api.idpselections, api.idpselections.signup, api.localaccountsignin, api.signuporsignin, api.selfasserted, api.selfasserted.profileupdate, api.localaccountsignup, api.localaccountpasswordreset
You can then add below code block to signup_signin.xml files, if you are using same Base and Extensions files. If you have separate Base, Extension and RP files, below code block can be added to extensions or RP files or you can directly update the LoadURI in the base file.
<BuildingBlocks>
<ContentDefinitions>
<ContentDefinition Id="api.signuporsignin">
<LoadUri>https://moviesdiag132.blob.core.windows.net/b2c/unified.html</LoadUri>
</ContentDefinition>
<ContentDefinition Id="api.localaccountsignup">
<LoadUri>https://moviesdiag132.blob.core.windows.net/b2c/unified.html</LoadUri>
</ContentDefinition>
</ContentDefinitions>
</BuildingBlocks>
You can reference the unified.html (for signup_signin) that I have added URL for, in the LoadUri within above XML snippet.
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