gistfile1.txt

.response.transition-from{
  max-height: 0px;
}

.response.transition-to{
  max-height: 1000px;
}

.response.transition-out{
  opacity: 0; 
}

.response{
  margin-right: 20px;
  transition: 1000ms max-height ease-in-out, 1000ms opacity ease;
  -webkit-transition: 1000ms max-height ease-in-out, 1000ms opacity ease;
  overflow: hidden;
}