#imported-file {
  background-image: url("./folder/relative/path");
  background-image: url("./relative/path");
  background-image: url("../relative/path");
  background-image: url("folder/module");
  background-image: url("folder/module/path");
  background-image: url("folder/module/relative/path");
}
#rewrite-urls-all {
  background-image: url("./relative/path");
  background-image: url("../relative/path");
  background-image: url("./path");
  background-image: url("./");
  background-image: url("module");
  background-image: url("module/path");
  background-image: url("module/relative/path");
}