What is the mouse down selector in CSS?
I think you mean the active state
button:active{
//some styling
}
These are all the possible pseudo states a link can have in CSS:
a:link {color:#FF0000;} /* unvisited link, same as regular 'a' */
a:hover {color:#FF00FF;} /* mouse over link */
a:focus {color:#0000FF;} /* link has focus */
a:active {color:#0000FF;} /* selected link */
a:visited {color:#00FF00;} /* visited link */
See also: http://www.w3.org/TR/selectors/#the-user-action-pseudo-classes-hover-act
I figured out that this behaves like a mousedown event:
button:active:hover {}