message: Disable touch highlight on Backdrop
diff: @@ -11,6 +11,8 @@ const Backdrop = styled(Hidden)`
  height: 100%;
  background-color: rgba(0, 0, 0, 0.3);
  z-index: 998;
  + -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  + -moz-tap-highlight-color: rgba(0, 0, 0, 0);
  ${prop("theme.Backdrop")};
  `;
  