I have an HTML file with a subdirectory called img with an image called debut_dark.png. In my CSS file, I have:
img
debut_dark.png
body { backgro
According to your CSS file path, I will suppose it is at the same directory with your HTML page, you have to change the url as follows:
url
body { background: url(img/debut_dark.png) repeat 0 0; }