wordpress 3.3 relative paths in CSS - html

Question

I want to add an image to be a background of the header, the thing is that I don't want to add an absolute path since I'm doing this on my pc and them is to upload to my server.
should the <?php bloginfo('template_directory'); ?> work in the css? It is not working here.
code:
#branding {
background: url("<?php bloginfo('template_directory'); ?>/images/background2.jpg") repeat-x repeat-y;
height: 150px;
}

Answer 1

No, you can't use PHP within a CSS file.
You can still use a relative path. This example will work if your CSS file and images directory are in the same directory. WordPress knows this is relative to the theme.
#branding {
background: url("images/background2.jpg") repeat-x repeat-y;
height: 150px;
}
If the images directory is in a parent of the CSS file:
#branding {
background: url("../images/background2.jpg") repeat-x repeat-y;
height: 150px;
}

Answer 2

Somehow #developdaly solution did not work for me, but this helped:
.img-div {
background-image: url("wp-content/themes/your-theme/assets/images/your-img.jpg");
}

Answer 3

.img-div {
background-image: url("./assets/images/your-img.jpg");
}

Answer 4

As a SASS/SCSS user, I find the simplest way to solve this problem is to declare the URL as a variable in your .scss file:
$wpLocation: '/wp-content/themes/themename/';
Then reference it like this:
$background: url($wpLocation + "/whateverfile.jpg");