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HTML

              
                <div class="game-container">
    <p class="instructions">
      Find the ball
    </p>
    <div class="shell-game">
      <div class="cups-box">
        <div id="cup1" class="cup cup-1"></div>
        <div id="cup2" class="cup cup-2"></div>
        <div id="cup3" class="cup cup-3"></div>
        <div id="ball"></div>
      </div>
    </div>
    <button id="btnStart">START</button>
  </div>
              
            
!

CSS

              
                @import url('https://fonts.googleapis.com/css?family=Lato:400,700');

body {
  margin: 0;
  font-size: 14px;
  background-color: #9cdee0;
}
body p{
  margin: 0;
  padding: 0;
}
body *{
  outline: none;
}
.game-container {
  position: relative;
  width: 100%;
  background-color: #9cdee0;  
  color: #FFF;
  font-family: sans-serif;
  text-align: center;
}

.instructions{
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 1.571em;
  padding-top: 30px;
}

.shell-game{
  position: relative;
  width: 99%;
  height: 450px;
  margin-left: auto;
  margin-right: auto;
  margin-top: 50px;
}

.cups-box{
  position: absolute;
  width: 788px;
  height: 100%;
  margin: auto;
  left: 0; right: 0;
}

.cup{
  position: absolute;
  width: 196px;
  height: 286px;
  background-image: url(http://redcactus7.000webhostapp.com/assets/images/shellGame/cup.png);
  background-repeat: no-repeat;
  top: 50px;
}
.cup-2{
  left: 296px;
}
.cup-3{
  left: 592px;
}

#ball{
  position: absolute;
  width: 155px;
  height: 103px;
  background-image: url(http://redcactus7.000webhostapp.com/assets/images/shellGame/ball.png);
  background-repeat: no-repeat;
  left: 146px;
  top: 256px;
}

#btnStart{
  cursor: pointer;
  height: 40px;
  width: 90%;
  max-width: 250px;
  border: 0;
  background-color: #151f75;
  font-size: 1.571em;
  line-height: 1.8em;
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  color: #FFF;  
  -webkit-border-radius: 7px;
  border-radius: 7px;
  margin-bottom: 50px;
}
              
            
!

JS

              
                $(function(){

	var intMoves = 5; // number of moves
	var speed = 0.5; // initial speed of moves - increase each moves
	var maxSpeed = 0.2; // maximum speed of moves

	var objMovePattern = []; // object contain a pattern for the cup shifting
	var ball = $('#ball');
	var widthBall = (ball.width()/2)-40;
	var firstCup;

	(function init() {
		objMovePattern = generateMovePatterns();
		$('#btnStart').on('click', startGame);
	})();

	function startGame(event) {
		$(event.currentTarget).remove();
		firstCup = Math.round(Math.random()*2+1);
		var cup = $('.cup-'+firstCup);
		TweenMax.to(cup, 0.5,{y:-130});
		TweenMax.to(ball, 0.5,{left: cup.position().left+widthBall, y:-30, onComplete:function(){
			ball.css('z-index', '1');
			$('.cup').css('z-index', '10');
			TweenMax.to(cup, 0.5,{y:0, onComplete:shakeCups});
		}});
	}

	function shakeCups() {
		ball.css('display', 'none');
		var aPos = [$('.cup-'+objMovePattern[0][0]).position().left, $('.cup-'+objMovePattern[0][1]).position().left, $('.cup-'+objMovePattern[0][2]).position().left];
		for(var i = 0; i < objMovePattern.length; i++){
			speed = (speed > maxSpeed) ? speed/1.1 : maxSpeed;
			TweenMax.to($('.cup-'+objMovePattern[i][0]), speed,{left: aPos[0], delay:speed*i, ease:Sine.easeOut});
			TweenMax.to($('.cup-'+objMovePattern[i][1]), speed,{left: aPos[1], delay:speed*i, ease:Sine.easeOut});
			if(i == (objMovePattern.length-1)) TweenMax.to($('.cup-'+objMovePattern[i][2]), speed,{left: aPos[2], delay:speed*i, ease:Sine.easeOut, onComplete: unableCupClick});
			else TweenMax.to($('.cup-'+objMovePattern[i][2]), speed,{left: aPos[2], delay:speed*i, ease:Sine.easeOut});
		}
	}

	function unableCupClick() {
		$('.cup').css('cursor', 'pointer');
		$('.cup').on('click', clickCup);
	}

	function clickCup(event) {
		var currentCup = $(event.currentTarget);
		currentCup.off('click');
		currentCup.css('cursor', 'default');
		var iCup = currentCup.attr('id').split('cup')[1];
		ball.css({'left':$('.cup-'+firstCup).position().left+widthBall, 'display':'block'});
		TweenMax.to($('.cup-'+iCup), 0.5,{y: -130, ease:Sine.easeIn, delay:0.1});
	}

	// Tool functions

	function generateMovePatterns() {
		var objMoves = [[1,2,3]]; // initial state, cups order
		var aMoves = [1,2,3];

		for(var i = 0; i < intMoves; i++){
			var initialPattern = [1,2,3];
			var objShuffledPattern = shuffle(initialPattern);
			while(objShuffledPattern[0] == objMoves[i][0]){
				objShuffledPattern = shuffle(initialPattern);
			}
			objMoves.push(objShuffledPattern);
		}

		return objMoves;
	}

	function shuffle(array) {
		var currentIndex = array.length, temporaryValue, randomIndex;

		// While there remain elements to shuffle...
		while (0 !== currentIndex) {

			// Pick a remaining element...
			randomIndex = Math.floor(Math.random() * currentIndex);
			currentIndex -= 1;

			// And swap it with the current element.
			temporaryValue = array[currentIndex];
			array[currentIndex] = array[randomIndex];
			array[randomIndex] = temporaryValue;
		}

		return array;
	}

});
              
            
!
999px

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