<===> input.scss
#{hdr(2,5)} { color: #08c; }
<===> error
Error: Invalid CSS after "hdr": expected selector, was "(2, 5)"

<===> error-dart-sass
Error: expected selector.
  ,
1 | hdr(2, 5){ color: #08c; }
  |    ^
  '
  input.scss 1:4  root stylesheet