Brackets code editor not accepting my created files

I was working through a tutorial using angular just for some practice with brackets in general. As I got to the end I realized the code isn’t working and live preview is not giving me what it should be.

I spent a lot of time reviewing the code versus the tutorial - it was essentially identical, but not working. After some frustrating I decided to download the source code and live preview that - worked fine.

Then I decided to copy and paste that code into a new file and it didn’t work properly. I saved the file as .html. What else do I need to do to use angular in brackets that the source code file did?