ng-view-animation.scss

[ui-view].ng-enter, [ui-view].ng-leave {
    -webkit-transition-property: opacity;
    -moz-transition-property: opacity;
    -o-transition-property: opacity;
    transition-property: opacity;
    -webkit-transition-duration: 0.5s;
    -moz-transition-duration: 0.5s;
    -o-transition-duration: 0.5s;
    transition-duration: 0.5s;
    top: 0px;
    left: 0px;
    opacity: 0;
}

[ui-view].ng-enter {
  opacity: 0;
}

[ui-view].ng-enter-active {
  opacity: 1;
}

[ui-view].ng-leave {
    -webkit-transition-property: opacity;
    -moz-transition-property: opacity;
    -o-transition-property: opacity;
    transition-property: opacity;
    -webkit-transition-duration: 0.5s;
    -moz-transition-duration: 0.5s;
    -o-transition-duration: 0.5s;
    transition-duration: 0.5s;
    top: 0px;
    left: 0px;
    opacity: 1;
}

[ui-view].ng-leave-active {
  opacity: 0;
}