Code:
background: url (style/images/Header.png); alt=”header”
Take a look at the first link to the background image, you indicated that the images folder is inside of a folder called "style"
You did not include that in the img elements.
If the images are inside of a folder called "images", which is inside of a folder called "style", then you need to include "style/" before the "images/….png"
You also have a css rule inside of the HTML div
and a closing UL tag in your css.
I would need to see your folder structure to better help though.
