This is a question about the website www.blogger.com.

I am trying to modify my active template like this:

I want to add a github ribbon to my template page, like the ones seen here:

https://github.com/blog/273-github-ribbons

I have tried pasting in the templates in the head tag and in the body tag, but in both cases I get error messages like this from the blogger site:

Is it possible to add such a ribbon to a blogger site by editing the template html, and in that case, where is the correct place to paste in the code snippet?