Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
How to disable/remove Report Abuse|Powered By Google Sites in google sites at the bottom of the page. I have used some css attributes. but the sites says those attributes are not permitted.
You can't. It violates Google's terms of service which you agreed to in order to create that Google site.
If you do not wish to have a "powered by" link, you can try to use another provider for your website.