@import "foo.css";
@import 'bar/foo.css' print;
@import '../bar/foo.css' print;
@import '../../foo.css' print;
@import '/css/foo.css'; /* abs, should not alter */
@import 'http://foo.com/css/foo.css'; /* scheme, should not alter */
@import url(../foo.css) tv, projection;
@import url("/css/foo.css"); /* abs, should not alter */
@import url(/css2/foo.css); /* abs, should not alter */
@import url(foo:bar); /* scheme, should not alter */
@import url(); /* empty, should not alter */
foo {clip-path:url(#c1)} /* inline clip path, should not alter */
foo {clip-path:url(foo.svg#c1)}
foo {mask: url( #c1 )} /* should not alter */
foo {-webkit-mask: url( #c1 )} /* should not alter */
foo {background:url('bar/foo.png')}
foo {background:url('http://foo.com/css/foo.css');} /* scheme, should not alter */
foo {background:url("//foo.com/css/foo.css");} /* protocol relative, should not alter */
foo {background:url(foo:bar);} /* scheme, should not alter */
foo {background:url("foo bar.jpg");}
foo {background:url("");} /* empty, should not alter */
@import url('foo bar.css');
@import "foo bar.css";