Pattern: :active   Definition: The :active

Pattern: element1 + element2   Definition: The element1 + element2 selector

Pattern: element1 element2   Definition: The element1 element2 selector

Pattern: element1 > element2   Definition: The element1 > element2

Pattern: [attr*=substring]   Definition: The [attr*=substring] selector

Pattern: [attr]   Definition: The [attr] selector matches any

Pattern: :first-child   Definition: The :first-ch

Pattern: :hover   Definition: The :hover pseudo-class

Pattern: :first-of-type   Definition: The :first-

Pattern: [attr^=substring]   Definition: The [attr^=substring] selector