make the user listen to information, instead of reading information.
Tip:
The :focus selector is allowed on elements that accept keyboard events or other user inputs.
Syntax:
a:focus {
css declarations;
}
Examples:
a:focus {
color:#f90;
font-size:24px;
}
When a link gets focus, gradually change its color to #f90 and its font-size to 24px.