ul li ul .itam-2{position: absolute;top: 0px; left: 190px;width:100%;text-align: center; top: 0; display: none;}

ul li ul li ul li:hover .itam-2{display: block;}
.itam-2:hover{display: block;}
.s-a{
  padding: 15px !important;
  border-bottom: 1px solid #e9efe5;
}
.he-video-mob{
  height: 500px;
}

@media screen and (max-width: 640px) {

  ul li ul .itam-2{position: relative;top: 0px; left:0px;width:100%;text-align: center; top: 0; display: block;}
  .s-a{
    padding: 15px !important;
    border-top: 1px solid #e9efe5;
    border-bottom: 1px solid #fff;
  }
  .he-video-mob{
    height: 250px;
  }
}