Input script:

const Bar = styled.div`
  margin: 1px;
    padding: 2px;
`;

Prettier output:

const Bar = styled.div`
  margin: 1px;
  padding: 2px;
`;

deno fmt output (no change):

const Bar = styled.div`
  margin: 1px;
    padding: 2px;
`;

Deno now has builtin css formatter. I think deno fmt should format the css code inside tagged template literals. (prettier seems detecting the embedded language from the tag symbol)

Note: This issue comes from the user interview with some enterprise tech team. This is the blocker for them to use deno fmt for their frontend code base.