.my-class {
	background-image: url(wimg('a-test-image.jpg'));
}

#my-id {
	background: rgba(100, 200, 45) center cover url('/assets/images/another-image.png');
}

.another-class {
	background: url('/test/root/dir/foobar.jpg');
}

#another-id {
	background: url('http://testing.com/barfoo.png');
}