.sidebar-left-nav {
  -webkit-transform: translate3d(-100%, 0px, 0px);
  transform: translate3d(-100%, 0px, 0px);
  visibility: visible;
  transition: all 0.5s ease 0s;
  -webkit-transition: all 0.5s ease 0s;
}

.closed {
  -webkit-transform: translate3d(0px, 0px, 0px);
  transform: translate3d(0px, 0px, 0px);
  visibility: visible;
}