Content

The content property is used with the :before and :after pseudo-elements, to insert generated content.

Value	Description
normal	Default value. Sets the content, if specified, to normal, which default is 'none' (which is nothing)
none	Sets the content, if specified, to nothing
counter	Sets the content as a counter
attr(attribute)	Sets the content as one of the selector's attribute
string	Sets the content to the text you specify
open-quote	Sets the content to be an opening quote
close-quote	Sets the content to be a closing quote
no-open-quote	Removes the opening quote from the content, if specified
no-close-quote	Removes the closing quote from the content, if specified
url(url)	Sets the content to be some kind of media (an image, a sound, a video, etc.)