chromium/third_party/blink/web_tests/inspector-protocol/css/resources/declaration-after-invalid-nested-rule.css

#target {
  width: 42px;
  &!{} height: 100px;
  color: green;
}

#target {
  z-index: 42;
  &!{} height: 100px;
  /* background-color: green; */
}