Since template.css is located in /new_css/ it tries to find the background-image file 'none' in that same folder. If you don't need a background image there, use background-image: none; instead, or remove the background properties altogether.
I would also suggest running your code through the W3C HTML validator. You have, for example, two opening <html> tags, and while you're declaring the XHTML doctype, you rarely 'self-close' an element, e.g. you use <meta name="robots" content="index,follow"> instead of <meta name="robots" content="index,follow" />.