Animating Angular Apps: ngShow and ngHide

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
  <link rel="stylesheet" href="style.css">
  
  <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.19/angular.min.js"></script>
  <script src="//cdnjs.cloudflare.com/ajax/libs/angular.js/1.2.20/angular-animate.min.js"></script>
  <script src="app.js"></script>
</head>
<body class="container" ng-app="animateApp" ng-controller="mainController">

  <header class="text-center">
    <h1>Animating Angular Apps<small>ngShow and ngHide</small></h1>
    <a class="btn btn-primary" href="#" ng-click="lions = !lions" ng-class="{ active: lions }">Toggle Lions</a>
    <a class="btn btn-success" href="#" ng-click="cranes = !cranes" ng-class="{ active: cranes }">Toggle Cranes</a>
  </header>  
  
  <div class="row">
    <div class="col-xs-6">
    
      <div class="jumbotron" ng-show="lions">
        <img src="http://scotch.io/wp-content/uploads/2014/07/14514600585_49ba9f860c.jpg" class="img-responsive img-thumbnail">
      </div>
      
    </div>
    <div class="col-xs-6">
    
      <div class="jumbotron" ng-show="cranes">
        <img src="http://scotch.io/wp-content/uploads/2014/07/cranes.jpg" class="img-responsive img-thumbnail">
      </div>
      
    </div>
  </div>
  
</body>
</html>

angular.module('animateApp', ['ngAnimate'])

.controller('mainController', function($scope) {
  
  // set the default states for lions and cranes
  $scope.lions = false;
  $scope.cranes = false;
});

header         { margin-bottom:50px; }
h1             { margin-bottom:30px; }
h1 small       { display:block; }

/* when hiding the thing */
.ng-hide-add         { 
  -webkit-animation:0.5s lightSpeedOut ease; 
  animation:0.5s lightSpeedOut ease; 
}

/* when showing the thing */
.ng-hide-remove      { 
  -webkit-animation:0.5s flipInX ease; 
  animation:0.5s flipInX ease; 
}

/* ANIMATIONS (FROM ANIMATE.CSS) */

/* flip in */
@-webkit-keyframes flipInX {
  0% {
    -webkit-transform: perspective(400px) rotate3d(1, 0, 0, 90deg);
    transform: perspective(400px) rotate3d(1, 0, 0, 90deg);
    -webkit-transition-timing-function: ease-in;
    transition-timing-function: ease-in;
    opacity: 0;
  }

  40% {
    -webkit-transform: perspective(400px) rotate3d(1, 0, 0, -20deg);
    transform: perspective(400px) rotate3d(1, 0, 0, -20deg);
    -webkit-transition-timing-function: ease-in;
    transition-timing-function: ease-in;
  }

  60% {
    -webkit-transform: perspective(400px) rotate3d(1, 0, 0, 10deg);
    transform: perspective(400px) rotate3d(1, 0, 0, 10deg);
    opacity: 1;
  }

  80% {
    -webkit-transform: perspective(400px) rotate3d(1, 0, 0, -5deg);
    transform: perspective(400px) rotate3d(1, 0, 0, -5deg);
  }

  100% {
    -webkit-transform: perspective(400px);
    transform: perspective(400px);
  }
}

@keyframes flipInX {
  0% {
    -webkit-transform: perspective(400px) rotate3d(1, 0, 0, 90deg);
    -ms-transform: perspective(400px) rotate3d(1, 0, 0, 90deg);
    transform: perspective(400px) rotate3d(1, 0, 0, 90deg);
    -webkit-transition-timing-function: ease-in;
    transition-timing-function: ease-in;
    opacity: 0;
  }

  40% {
    -webkit-transform: perspective(400px) rotate3d(1, 0, 0, -20deg);
    -ms-transform: perspective(400px) rotate3d(1, 0, 0, -20deg);
    transform: perspective(400px) rotate3d(1, 0, 0, -20deg);
    -webkit-transition-timing-function: ease-in;
    transition-timing-function: ease-in;
  }

  60% {
    -webkit-transform: perspective(400px) rotate3d(1, 0, 0, 10deg);
    -ms-transform: perspective(400px) rotate3d(1, 0, 0, 10deg);
    transform: perspective(400px) rotate3d(1, 0, 0, 10deg);
    opacity: 1;
  }

  80% {
    -webkit-transform: perspective(400px) rotate3d(1, 0, 0, -5deg);
    -ms-transform: perspective(400px) rotate3d(1, 0, 0, -5deg);
    transform: perspective(400px) rotate3d(1, 0, 0, -5deg);
  }

  100% {
    -webkit-transform: perspective(400px);
    -ms-transform: perspective(400px);
    transform: perspective(400px);
  }
}

/* light speed out */
@-webkit-keyframes lightSpeedOut {
  0% {
    opacity: 1;
  }

  100% {
    -webkit-transform: translate3d(100%, 0, 0) skewX(30deg);
    transform: translate3d(100%, 0, 0) skewX(30deg);
    opacity: 0;
  }
}

@keyframes lightSpeedOut {
  0% {
    opacity: 1;
  }

  100% {
    -webkit-transform: translate3d(100%, 0, 0) skewX(30deg);
    -ms-transform: translate3d(100%, 0, 0) skewX(30deg);
    transform: translate3d(100%, 0, 0) skewX(30deg);
    opacity: 0;
  }
}