Pseudo-Classes are selectors that permit selection based on information outside of the document tree.
:pseudo-class
active
any-link
blank
checked
default
dir
disabled
empty
enabled
first-child
first-of-type
focus
focus-within
fullscreen
hover
in-range
indeterminate
invalid
lang
last-child
last-of-type
link
local-link
not
nth-child
nth-col
nth-last-child
nth-last-col
nth-last-of-type
nth-of-type
only-child
only-of-type
optional
out-of-range
placeholder-shown
read-only
read-write
required
root
scope
target
valid
visited
