.isotope, .isotope .isotope-item{
  -webkit-transition-duration: 0.8s;
     -moz-transition-duration: 0.8s;
      -ms-transition-duration: 0.8s;
       -o-transition-duration: 0.8s;
          transition-duration: 0.8s;
}
.isotope-hidden.isotope-item{
    pointer-events: none;
    z-index: 2;
}