raptor/test/resources/optimizer/css-filters/filter-test.css

RaptorJS provides an AMD module loader that works in Node, Rhino and the web browser. It also includes various sub-modules to support building optimized web applications.

.test-1 {
    background-image: url(ebay-logo.png);
}

.test-2 {
    background-image: url("ebay-logo.png");
}

.test-3 {
    background-image: url('ebay-logo.png');
}