Rails Cast Episode $209

Simple issue here.  I wasn't even following the rails cast here but whenever I like the stylesheet RB uses. 

I'm calling that style sheet within the public directory of a small demo app.  The body is not being called:

body {
  background-color: #black;
  font-family: Verdana, Helvetica, Arial;
  font-size: 14px;
}

The background color is not turning black or any other manually set color. 

I just did:

rails g scaffold project name:string project_id:integer
rails g scaffold task name:string

Had the same views and everything.  I'm using rails 3.2.5

Why isn't the stylesheet here being rendered correctly in Firefox?