Why wont it work without the stylesheet


#1
<link rel="stylesheet" href="http://s3.amazonaws.com/codecademy-content/courses/ltp/css/bootstrap.css">
<link rel="stylesheet" href="main.css">

#2

I'm not exactly sure what you are getting at.

Both of those .css files contain a lot of CSS rules. Those rules are what is affecting the appearance of your web page.