/* alert box fade in and out */
.alert.ng-hide-add, .alert.ng-hide-remove {
    display: block !important;
}

.alert.ng-hide-remove, .alert.ng-hide-add.ng-hide-add-active {
    opacity: 0;
}

.alert.ng-hide-remove.ng-hide-remove-active, .alert.ng-hide-add {
    opacity: 1;
}