.hover {
  position: relative;  
}
.viewonlineuser, .notifications {
  position: absolute;
  left: 100%;
  top: 100%;
  display: none;
  border: 2px solid #666666;
  padding: 5px;
  background: #000000;
  z-index: 100;
  box-shadow: rgba(0,0,0,1) 0 3px 8px 0;
  transition: opacity 50s;
  -webkit-transition: opacity 50s;
  opacity: 0;
  border-radius: 25px 7px 25px 7px;
}
.viewonlineuser {
  margin-left: -410px;
  width: 400px;  
}
.notifications {
  margin-left: -610px;
  width: 600px;
}
.hover:hover .notifications, .hover:hover .viewonlineuser {
  display: block;
  transition: opacity .5s;
  -webkit-transition: opacity .5s;
  opacity: 1;
}