Question

Which of the following can you NOT format using CSS3 pseudo-classes?

Option:
a. valid fields
b. invalid fields
c. required fields
d. non-required fields

Answer 1

CSS3 pseudo-classes cannot be used to format non-required fields.

The correct answer is d). non-required fields.

Step-by-step explanation:

CSS3 pseudo-classes are used to select and style specific elements in HTML. Some common CSS3 pseudo-classes include :hover, :active, and :focus.

However, CSS3 pseudo-classes cannot be used to format non-required fields. These fields are often styled using other CSS properties such as background color or border.

Here's a description of each pseudo-class:

• :link – selects unvisited links.
• :visited – selects visited links.
• :hover – the state that happens when the user places their mouse pointer on top of a link.
• :active – the state that happens when the user clicks on a link.

In summary, when using CSS3 pseudo-classes, you can format valid fields, invalid fields, and required fields, but not non-required fields.