Margin / Padding when creating an app from 'ember new'

I am new to ember / html / css and am having a hard time after creating a basic new ember app using ‘ember new’. The body of the app seems to have a left margin / padding that I can’t seem to get rid of. Any help would be greatly appreciated. Sorry in advance for such a newbie question.

There is an app.css but is does not normally have a left margin. Perhaps it is some markup in your application.hbs CSS Example:

The default browser user-agent style sheet including a margin on the body element.