class target
class non-target
id target
id non-target

tag target

tag non-target
attr target
attr non-target
compound target
compound non-target (missing class b)
link target
link non-target
universal target
has-only match
has-only no match
has+class match
has+class no matching child
has+class no class
has direct child
has nested (not direct) child
nested target
multi-selector A
multi-selector B
multi-selector non-target