#r8hl_panel {

   max-height: 300px;

   -webkit-transition: all 3s ease;

   -moz-transition: all 3s ease;

   -o-transition: all 3s ease;

   transition: all 3s ease;

   overflow: hidden;

}



#r8hl_panel:hover {

   max-height: 5000px;

}