trouble with CSS not loading on number of browsers

[Hippy.green]

Hi there

I am new to this forum, I keen to develop my skills in web development... anyway here is my problem

I am developing a site at present, but having trouble with CSS not loading on number of browsers..... I think it some thing I am doing when I am setting up the CSS file in DW

I am using CSS to control background images in this case graphic broader

any help would be really great.... I going am nuts trying to workout what I am doing wrong

below are screen dumps of browser and files

http://i195.photobucket.com/albums/z103/Hippygreen_photos/screenshot7-1.jpg

http://i195.photobucket.com/albums/z103/Hippygreen_photos/screenshot10.jpg

http://i195.photobucket.com/albums/z103/Hippygreen_photos/screenshot11.jpg

http://i195.photobucket.com/albums/z103/Hippygreen_photos/screenshot14.jpg

Cheers

D