/*
 * 5.10 Pseudo-elements and pseudo-classes
 *
 * http://www.w3.org/TR/REC-CSS2/selector.html#pseudo-elements
 */


p:first-line {}
p::first-line {}

p:first-letter {}
p::first-letter {}

p:first-line:first-letter {} /* invalid */
p:first-line em {} /* invalid */

p:selection {} /* invalid */
p::selection {}