Case-Based Critical Thinking Question
Rosa is implementing a new layout for her jewelry store website by incorporating visual effects using CSS. In particular, she is adding generated content and visual form feedback.
-To specify properties for a form field with content that meets the rules for the field, Rosa should use the __________ pseudo-class.
A) :valid
B) :invalid
C) :focus
D) :checked

Question

Quizplus · Accepted Answer

The :valid pseudo-class is used to select form fields with valid input. Since Rosa wants to specify properties for form fields with content that meets the rules for the field, :valid is the best choice. The other options, :invalid, :focus, and :checked, all select form fields based on different criteria that do not necessarily relate to valid input.