@namespace x url("/prx/000/https/raw.githubusercontent.com/web-platform-tests/wpt/a87703f99625cf59633646af02e53d321b96b607/css/css-namespaces/support/test");
@namespace y url("/prx/000/https/raw.githubusercontent.com/web-platform-tests/wpt/a87703f99625cf59633646af02e53d321b96b607/css/css-namespaces/support/test");
w|test { background:red }