styling input tags

Question 1

This is used to point and style an input field when it
gets focus or is currently being used.

Answer 1

:focus

Question 2

This is used to point and style checked <input></input>
elements (for INPUT types radio and checkbox only)

Answer 2

:checked

Question 3

This is used to select and style <input></input> elements that
has a “required” attribute.

Answer 3

:required

Question 4

This is used to select and style <input></input> Elements with
no “required” attribute.

Answer 4

:optional

Question 5

This is used to point and style all <input></input> elements
with a valid value.

Answer 5

:valid

Question 6

This is used to point and style all <input></input> elements
with an invalid data.

Answer 6

:invalid

Question 7

This is used to place a content before the specified
element.

Answer 7

::before

Question 8

This is used to place a content after the specified
element.

Answer 8

::after