Hosted App Out of box – No CSS?

Setup environment following this article,

www.c-sharpcorner.com/UploadFile/22da8c/set-up-app-environment-in-sharepoint-2013-part-1/

Please note i delete an older zone in dns which i created wrong and also renamed app domain and prefix in central admin to fix issues with apps.

but getting error,

There is no CSS

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