Question

Which of the following is not the pseudo class for CSS Basic UI Level3?

(a) :optional

(b) :read-only

(c) :valid

(d) :checked

This question was addressed to me in class test.

I want to ask this question from Appearance of Form Elements in section Lists, Tables and Forms of CSS

Answer 1

Correct option is (d) :checked

The explanation is: CSS Basic UI Level 3 has many pseudo-classes like :widget, :invalid, :valid, :in-range, :required, :read-write, :read-only, :optional, :out-of-range. CSS Selector Level 3 has the classes :disabled, :enabled, :indeterminate, :checked.