string: "simple"|"complex"
The following patterns are considered problems:
:not(a, div) {}:not(a.foo) {}The following patterns are not considered problems:
:not(a):not(div) {}:not(a) {}The following pattern is considered a problem:
:not(a):not(div) {}The following patterns are not considered problems:
:not(a, div) {}:not(a.foo) {}:not(a).foo:not(:empty) {}