.alert.alert-hover {
  width: 50%;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  margin: 5px auto 0 auto;
  text-align: center;
  z-index: 2000;
  opacity: 0.8;
}

.alert.ng-enter {
  transition: all 0.5s ease;
  opacity: 0;
}

.alert.ng-enter.ng-enter-active {
  opacity: 1;
}

.alert.ng-leave {
  transition: all 0.5s ease;
  opacity: 1;
}

.alert.ng-leave.ng-leave-active {
  opacity: 0;
}

@media (max-width: 768px) {
  .alert.alert-hover {
    width: 100%;
  }
}