This page lists various styles which don't fit elsewhere.
Ajax markers
This is the class "ajaxok"
This is the class "ajaxwarn"
This is the class "ajaxerr"
Odd styles
This is the class "glass"
This is the class "pill"
✔
The tick above is the class "faderelement". It is used, for example, in Ajax forms where something is updated and you wish to let the user know that it has been accepted. It fades away after a few seconds so that a second update will also be indicated.
On this page only, it repeats indefinitely but normally it only appears once. It would reappear after Ajax refreshes the element.