not working

not working

I am cleaning up my web portfolio directory by placing CSS, images etc
into respective folders.
<link rel="stylesheet" href="css/style.css">
<link rel="stylesheet" href="css/contact.css">
However, I can't seem to load certain DIV elements from my CSS file if
it's inside a directory.
The DIV is below:
#contact-form-wrap {
width: 1024px;
margin: 0 auto;
background: url('img/form-bg.png') no-repeat;
min-height: 768px;
}
Is there a way of solving this? Everything else seems to load except for
the div above.