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HTML

              
                <header role="banner">
  <nav class="anchor-nav" role="navigation">
    <a href="#section-1" id="anchor1">Section 1</a>
    <a href="#section-2" id="anchor2">Section 2</a>
    <a href="#section-3" id="anchor3">Section 3</a>
    <a href="#section-4" id="anchor4">Section 4</a>
  </nav>
</header>

<main class="full-screen" role="main">
  
  <section class="full-screen blue" id="section-1">
    <p>scroll X to view all the section</p>
     <img  class="title" src="https://daks2k3a4ib2z.cloudfront.net/597b56c58d2f010001d8bedb/59b81aa33e0c400001eeb8dc_170909_Muuaaa-Arsenal_Alcapurria-Quema_Coasters.png" alt="">
  </section>

  <section class="full-screen " id="section-2">
    <div id="overlay">
      <p>Section 2</p>

      <div class="animated-items">
        <a class="click-element"> click me to scroll right</a>
      </div>
      </div>
    
  </section>

  <section class="full-screen " id="section-3">
    <div>
      <p>Section 3</p>
    </div>
  </section>

  <section class="full-screen " id="section-4">
    <div>
      <p>Section 4</p>
    </div>
  </section>
</main>
              
            
!

CSS

              
                /*
	Demo Styles: NOT REQUIRED
*/
html,
body {
  margin: 0;
  height: 100%
}
a {
  color: white;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}
a.active {
  color: #000;
  text-decoration: underline;
}

h1,
p {
  margin: 0;
  padding: 0;
}

header {
  position: fixed;
  top: 10px;
  left: 10px;
}
main{
  display: flex;
  flex-wrap: wrap; 
  height: 100%;
  width:calc(1280px *4 );
}
section {
  width:100%;
  max-width: 1280px;
  height: 100%;
  margin:auto; 
  position: relative;
  overflow:hidden;
}
 
.title{
  width:  750px;
  height: 502px;
  position: relative;
  z-index: 2; 
  border:2px solid orange;
  box-shadow: -23px 25px 54px 2px rgba(0, 0, 0, 0.24);
}
.animated-items{
  width:  750px;
  height: 502px;
  position: relative;
  z-index: 2; 
  border:2px solid orange;
  box-shadow: -23px 25px 54px 2px rgba(0, 0, 0, 0.24);
  opacity:0.7;
  display:block;
  background:url('http://accountbased.co.uk/SAP/00684/john-deere/images/img1.jpg'); 
  display: flex;
  justify-content:center;
 
}

.click-element{
  
  border:1px solid red;
  background:black;
  color:white;
  position: absolute;
  top:50%;
  padding:50px;
}

.blue {
	background-color: #3883d8;
}
.red {
	background-color: #cf3535;
}
.orange {
	background-color: #ea6300;
}

.darkblue, .click-element.active {
	background-color: #000080;
}
              
            
!

JS

              
                console.clear();

// Init controller
var controller = new ScrollMagic.Controller({
  globalSceneOptions: {
    duration: $("section").height(),
    triggerHook: 0.025,
    reverse: true
  },
  vertical: false
});

var scenes = {
  scene1: {
    "section-1": "anchor1"
  },
  scene2: {
    "section-2": "anchor2"
  },
  scene3: {
    "section-3": "anchor3"
  },
  scene4: {
    "section-4": "anchor4"
  }
};

for (var key in scenes) {
  // skip loop if the property is from prototype
  if (!scenes.hasOwnProperty(key)) continue;

  var obj = scenes[key];

  var scene = new ScrollMagic.Scene({
    triggerElement: "#section-1",
    duration: 200,
    triggerHook: "onLeave"
  }).addTo(controller);

  for (var prop in obj) {
    // skip loop if the property is from prototype
    if (!obj.hasOwnProperty(prop)) continue;

    new ScrollMagic.Scene({ triggerElement: "#" + prop })
      .setClassToggle("#" + obj[prop], "active")
      .addTo(controller);

    var tween = TweenMax.fromTo(
      "#section-1 .title",
      1,
      { xPercent: 25, scale: 0.6 },
      { xPercent: 75, x: 0, scale: 1 }
    );
    new ScrollMagic.Scene({
      triggerElement: "#section-1",
      duration: $("#section-1").outerWidth(true)
    })
      .setTween(tween)
      .addTo(controller)
      .tweenChanges(false);

    new ScrollMagic.Scene({
      triggerElement: "#section-1",
      duration: $("#section-1").outerWidth(true)
    })
      .on("enter", function() {
        $("#anchor1").addClass("selected");
        $("#section-1").addClass("animated fadeInUp");
      })
      .on("leave", function() {
        $("#anchor1").removeClass("selected");
        $("#section-1").removeClass("animated fadeInUp");
      })
      .addTo(controller);

    //--------------
    //SECTION-2 -- IMAGE SHOULD GO TO CENTER ON SECTION 2
    //--------------
    var tween = TweenMax.fromTo(
      "#section-2 .animated-items",
      1,
      { xPercent: -100 },
      { xPercent: 0, x: 0 }
    );
    new ScrollMagic.Scene({
      triggerElement: "#section-2",
      offset: -750,
      duration: $("#section-2").outerWidth(true)
    })
      .setTween(tween)
      .addTo(controller)
      .tweenChanges(false);

    new ScrollMagic.Scene({
      triggerElement: "#section-2",
      duration: $("#section-2").outerWidth(true)
    })
      .on("enter", function() {
        $("#anchor2").addClass("selected");
        $("#section-2").addClass("animated slideIn");
      })
      .on("leave", function() {
        $("#anchor2").removeClass("selected");
        $("#section-2").removeClass("animated slideIn");
      })
      .addTo(controller)
      .tweenChanges(false);

    //CLICK EVENT ON SECTION 2, AND WHEN SCROLLING BACK TO SECTION 1 IT SHOULD REVERT ALL

    var tween1 = new TimelineMax();
    tween1
      .to(
        ".click-element",
        0.3,
        {
          x: 500
        },
        0
      )
      .to(
        "#section-2",
        0.3,
        {
          className: "+=darkblue"
        },
        0
      );

    $(".click-element").on("click", function(e) {
      e.preventDefault;
      TweenMax.to(window, 0.7, { scrollTo: { x: 0 } });
      //console.log('click')

      $(".click-element").toggleClass("active");

      if ($(".click-element").hasClass("active")) {
        $(".click-element").removeClass("active");
        tween1.play();
      } else {
        $(".click-element").addClass("active");
        tween1.reverse();
      }
    });

    var scene1 = new ScrollMagic.Scene({
      triggerElement: "#section-2",
      offset: 50
    })
      .setClassToggle("body", "darkblue")
      .setTween(tween1)
      .addTo(controller);

    scene1.addIndicators();
  }
}

// Change behaviour of controller
// to animate scroll instead of jump
controller.scrollTo(function(target) {
  TweenMax.to(window, 0.5, {
    scrollTo: {
      x: target,
      autoKill: true // Allow scroll position to change outside itself
    },
    ease: Cubic.easeInOut
  });
});

//  Bind scroll to anchor links using Vanilla JavaScript
var anchor_nav = document.querySelector(".anchor-nav");

anchor_nav.addEventListener("click", function(e) {
  var target = e.target,
    id = target.getAttribute("href");

  if (id !== null && id.length > 0) {
    e.preventDefault();
    controller.scrollTo(id);

    if (window.history && window.history.pushState) {
      history.pushState("", document.title, id);
    }
  }
});

window.addEventListener("wheel", onWheel);

function onWheel(event) {
  event.preventDefault();

  var normalized;
  var delta = event.wheelDelta;
  var scroll =
    (window.pageXOffset || document.scrollLeft) - (document.clientLeft || 0) ||
    0;

  if (delta) {
    normalized = delta % 120 == 0 ? delta / 120 : delta / 12;
  } else {
    delta = event.deltaY || event.detail || 0;
    normalized = -(delta % 3 ? delta * 10 : delta / 3);
  }

  normalized *= -1;

  TweenLite.to(window, 0.4, { scrollTo: { x: scroll + 200 * normalized } });
}

              
            
!
999px

Console