1<===> input.scss
2a:nth-child() {
3  color: yellowgreen;
4}
5
6<===> error
7Error: Invalid CSS after "a:nth-child(": expected An+B expression, was ")"
8        on line 2 of input.scss
9  Use --trace for backtrace.
10
11<===> error-libsass
12Error: Invalid CSS after "a:nth-child(": expected An+B expression, was ") {"
13        on line 1:3 of input.scss
14>> a:nth-child() {
15   --^
16
17<===> error-dart-sass
18Error: Expected "n".
19  ,
201 | a:nth-child(){
21  |             ^
22  '
23  input.scss 1:13  root stylesheet
24