h | :hover

f | :focus

c | :checked

a | :active

first | >*:first-child

ft | >*:first-child

last | >*:last-child

lt | >*:last-child

odd | >*:nth-child(odd)

od | >*:nth-child(odd)

even | >*:nth-child(even)

ev | >*:nth-child(even)

all | *

* | *

every | >*

> | >*

between | >*+*

bt | >*+*

after | ::after

aft | ::after

before | ::before

bef | ::before

dark | (selector) => `.dark ${selector}`