.CLASS-1:after {}
.CLASS-1::after {}
.CLASS-1::backdrop {}
.CLASS-1:before {}
.CLASS-1::before {}
.CLASS-1::cue {}
.CLASS-1::cue-region {}
.CLASS-1:first-letter {}
.CLASS-1::first-letter {}
.CLASS-1:first-line {}
.CLASS-1::first-line {}
.CLASS-1::file-selector-button {}
.CLASS-1::marker {}
.CLASS-1::part(foo) {}
.CLASS-1::placeholder {}
.CLASS-1::selection {}
.CLASS-1::slotted(*) {}
.CLASS-1::slotted(span) {}
.CLASS-1::slotted(.CLASS-2) {}

#ID-1:after {}
#ID-1::after {}
#ID-1::backdrop {}
#ID-1:before {}
#ID-1::before {}
#ID-1::cue {}
#ID-1::cue-region {}
#ID-1:first-letter {}
#ID-1::first-letter {}
#ID-1:first-line {}
#ID-1::first-line {}
#ID-1::file-selector-button {}
#ID-1::marker {}
#ID-1::part(foo) {}
#ID-1::placeholder {}
#ID-1::selection {}
#ID-1::slotted(*) {}
#ID-1::slotted(span) {}
#ID-1::slotted(.CLASS-2) {}