:before and :after
Use the content attribute to add text to the pseudo-selectors :before and :after
This property may only be used in the definitions for
:after pseudo selectors. The text specified by the
content property will be inserted just before or just after the element's actual text.
The content property may have arbitrary Unicode sequences placed within it by using the escape sequence, a reverse-solidus
\ followed by two, four, or six hexadecimal digits.
CSS counters can be placed within content by using the
counter(C) function, passing the name of a counter
C that has been declared elsewhere with