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HTML 

              
                
<link href='https://fonts.googleapis.com/css?family=Asap:400,700' rel='stylesheet' type='text/css'>
<div id="wrapper">
  <div id="banner">
    <div class="slide" id="slide2">
      <h4>FOR</h4>
    </div>
    <div class="slide" id="slide1">
      <h1>CREATE</h1>
      <div id="stunningWrap"><h2 id="stunning">STUNNING</h2></div>
      <h3>ANIMATIONS</h3>
    </div>
    <div class="slide" id="slide3">
      <div id="deviceHead">Desktop</div>
      <img src="https://www.greensock.com/_img/codepen/allDevicesBanner/desktop.png" id="desktop">
      <img src="https://www.greensock.com/_img/codepen/allDevicesBanner/laptop.png" id="laptop">
      <div id="mobile">
        <div id="tablet">
          <div id="nestedAnimation">
            <div id="tablet_end_screen"></div>
            <img src="https://www.greensock.com/_img/codepen/allDevicesBanner/logoman.png" id="logoman">
            <a href="https://www.greensock.com/gsap-js/" target="_blank"><div id="learnMore" class="gradient">learn more</div></a>
            <div id="replay"><img src="https://www.greensock.com/_img/codepen/allDevicesBanner/replay.png"></div>
          </div>
        </div>
        <div id="iphone">
          <img src="https://www.greensock.com/_img/codepen/allDevicesBanner/iphone.png">
        </div>
      </div>
    </div>
  </div>
</div>
<div id="slider"></div>
!

CSS 

              
                body{
  margin:20px;
  background-color:#555;
}

h1, h2, h3, h4, p, div, span{
  font-family: 'Asap', sans-serif;
  margin:0px;
  padding:0px;
}

h1{
  text-align:center;
  color:#81CD00;
  font-size:80px;
  background-color:#000;
}

h2{
  font-size:40px;
  padding-left:14px;
  position:relative;
  width:286px;
}

h3{
  padding-left:18px;
  background-color:#81CD00;
  font-size:40px;
  position:relative;
  left:122px; 
  top:74px;
  width:296px;
}

h4{
  position:absolute;
  font-size:70px;
  color:#444;
  top:40px;
  left:120px; 
}

#banner{
  position:absolute;
  width:300px;
  height:250px;
  overflow:hidden;
  visibility:hidden;
}

#wrapper{
  position:relative;
  width:300px;
  height:250px;
  background-color:#fff;
  border: solid 1px #333;
}

.slide{
  position:absolute;
  top:0px;
  left:0px;
  width:300px;
  height:250px;
}

#stunningWrap{
  width:300px;
  height:60px;
  overflow:hidden;
}

#deviceHead{
  font-size:36px;
  font-weight:200;
  width:300px;
  text-align:center;
  color:#777;
  margin:16px 0px 10px;
}

#mobile, #desktop, #laptop{
 top:70px;
}

#desktop, #laptop, #iphone, #tablet, .learnmore{
  position:absolute;
  display:block;
  border: solid 1px transparent;
  -webkit-backface-visibility:hidden;
}

#desktop{
  width:199px;
  height:181px;
  left:49px;
}

#laptop{
  width:292px;
  height:161px;
  left:3px;  
}

#mobile{
  position:absolute;
  width:199px;
  height:160px;
  display:block;
  left:51px;    
 /*background-color:red;*/
}

#iphone{
   left:132px;
   top:29px;
}

#tablet{
  z-index:1;
  background-color:#222;  background:url(https://www.greensock.com/_img/codepen/allDevicesBanner/logoman_tablet_bg.png) #222 no-repeat 110px 123px;
  width:282px;
  height:372px;
  border: solid 39px black;
  border-radius:30px;
  left:-80px;
  top:-160px;
}

#nestedAnimation{
  position:absolute;
  left:-10px;
  top:61px;
}

#tablet_end_screen{
  position:absolute;
  width:300px;
  height:250px;
  background:url(https://www.greensock.com/_img/codepen/allDevicesBanner/end.jpg);
}

#logoman{
  position:absolute;
  left:20px;
  top:80px; 
  visibility:hidden;
}

#learnMore{
  position:absolute;
  top:190px;
  left:70px;
  width:150px;
  padding:5px;
  text-align:center;
  font-weight:600;
  font-size:24px;
  border-radius:8px;
  color:#010;
}

#replay{
  position:absolute;
  left:276px;
  top:225px;
  width:19px;
  height:19px;
  cursor:pointer;
}

#slider{
  width:280px; 
  margin-top:80px; 
  margin-left:10px;
}

a:link{
  text-decoration:none;
}

.gradient{  
  background: #9af600; /* Old browsers */
  background: -moz-linear-gradient(top,  #9af600 0%, #a0fd00 50%, #90e700 51%, #a0fe00 100%); /* FF3.6+ */
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#9af600), color-stop(50%,#a0fd00), color-stop(51%,#90e700), color-stop(100%,#a0fe00)); /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(top,  #9af600 0%,#a0fd00 50%,#90e700 51%,#a0fe00 100%); /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(top,  #9af600 0%,#a0fd00 50%,#90e700 51%,#a0fe00 100%); /* Opera 11.10+ */
  background: -ms-linear-gradient(top,  #9af600 0%,#a0fd00 50%,#90e700 51%,#a0fe00 100%); /* IE10+ */
  background: linear-gradient(to bottom,  #9af600 0%,#a0fd00 50%,#90e700 51%,#a0fe00 100%); /* W3C */
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#9af600', endColorstr='#a0fe00',GradientType=0 ); /* IE6-9 */
}

.ui-slider .ui-slider-handle { 
  width: 40px !important; 
  margin-left: -20px !important; 
  height:40px !important; 
  margin-top:-10px !important;
}
!

JS 

              
                // This uses an old version of GSAP. For the latest and greatest version, go to https://greensock.com

TweenLite.ticker.fps(60);

/*  Just an example to show you the type of animation that you can create on devices that don't support Flash. 
    Give it a spin on your iOS device. We think you will like the results.

    This banner uses a handful CSS properties that require a modern browser. We recommend Google Chrome.
    Animation powered by the GreenSock Animation Platform (GSAP)
    Learn more: https://www.greensock.com/gsap-js/
*/

var $banner = $("#banner"), 
    $slide1 = $("#slide1"),
    $create = $("h1"),
    $stunning = $("h2"),
    $animations = $("h3"),
    $for = $("h4"),
    $deviceHead = $("#deviceHead"),
    $tablet = $("#tablet"),
    $desktop = $("#desktop"),
    $laptop = $("#laptop"),
    $mobile = $("#mobile"),  
    $iphone = $("#iphone"),
    $logoman = $("#logoman"),
    $learnMore = $("#learnMore"),
    $replay = $("#replay"),
    $slider = $("#slider"),
    timeline;

//CSSPlugin makes it much easy to set rotation, autoAlpha (visibility and opacity combined), transformPerpsective and other css props that would otherwise require vendor-prefixing.
function initCSS() {
  TweenLite.set($animations, {rotation:90});
  TweenLite.set($for, {autoAlpha:0});
  TweenLite.set($deviceHead, {transformPerspective:600});
  TweenLite.set($tablet, {scale:0.34, y:18, x:-38});
  TweenLite.set($slider, {autoAlpha:0});
}

/*  The following 3 functions are responsible for creating (and returning) timelines for each section of the entire banner. 
    Creating individual timelines for each section allows you to
      * keep your code clean, modular and manageable
      * place the timeline wherever you like in the main timeline and easily move it around whenever you like
      * affect the timeScale() (playback speed) of a particular section without affecting the banner as a whole
      * reuse animations multiple times
*/

function getIntroTextTimeline() {
  var tl = new TimelineLite();
  tl.from($create, 0.4, {scale:0.2, autoAlpha:0, ease:Back.easeOut})
  .from($stunning, 0.2, {top:-60}, "+=0.1") //added 0.1 seconds after current end of timeline
  .from($animations, 0.4, {top:400, ease:Power2.easeIn})
  .to($slide1, 0.3, {rotation:-90, left:-125, top:26}, "rotateOut") //creates a label called "rotateOut" at current end of timeline and places tween there
  .to($stunning, 0.2, {left:-300}, "rotateOut") //adds tween at "rotateOut" label 
  .to($animations, 0.2, {left:30}, "+=0.2")
  .to($animations, 0.2, {left:122}, "for") //label marks the start of the reveal of the word "for"
  .to($for, 0.2, {autoAlpha:1}, "for")
  .add("introOut", "+=0.7")
  .to($for, 0.2, {autoAlpha:0, left:300}, "introOut")
  .to($animations, 0.2, {autoAlpha:0, top:"-=300px"}, "introOut")
  return tl;
}

function getDevicesTimeline() {
  var tl = new TimelineLite();
  tl.from($deviceHead, 0.5, {autoAlpha:0})
  .from($desktop, 0.5, {rotation:-50, transformOrigin:"50% 500px"}) //rotates around a point 500px below the element
  .add("desktopOut", "+=0.5")
  .to($deviceHead, 0.25, {rotationX:-90, transformOrigin:"50% 100%"}, "desktopOut") //rotates around bottom edge of element
  .to($desktop, 0.5, {rotation:50, transformOrigin:"50% 500px"}, "desktopOut")
  .set($deviceHead, {text:"Laptop"}, "desktopOut+=0.25") //TextPlugin changes the text of a DOM elment. Allows us to re-use the same element multiple times
  .from($laptop, 0.5, {rotation:-50, transformOrigin:"50% 500px"}, "desktopOut")
  .fromTo($deviceHead, 0.25, {rotationX:90}, {rotationX:0, transformOrigin:"50% 100%", immediateRender:false}, "desktopOut+=0.25")
  .add("laptopOut", "+=0.5")
  .to($deviceHead, 0.25, {rotationX:-90, transformOrigin:"50% 100%"}, "laptopOut")
  .to($laptop, 0.5, {rotation:50, transformOrigin:"50% 500px"}, "laptopOut")
  .set($deviceHead, {text:"and Mobile"}, "laptopOut+=0.25")
  .from("#mobile", 0.5, {rotation:-50, transformOrigin:"50% 500px"}, "laptopOut")
  .fromTo($deviceHead, 0.25, {rotationX:90}, {rotationX:0, transformOrigin:"50% 100%", immediateRender:false}, "laptopOut+=0.25")
  return tl;
}

function getTabletAnimation() {
  var tl = new TimelineLite();
  tl.fromTo("#tablet_end_screen", 0.6, { clip:"rect(125px 300px 125px 0px)"}, { clip:"rect(0px 300px 250px 0px)"}, "revealTablet")
  .to($tablet, 0.4, {backgroundColor:"black"}, "revealTablet")
  .add("tabletGrow", "-=0.200")
  .to($tablet, 0.5, {scale:1, x:0, y:-10, ease:Back.easeOut}, "tabletGrow")
  .to($iphone, 0.4, {scale:0.2}, "tabletGrow")
  .add("logoman", "-=0.2")
  .set($logoman, {autoAlpha:1}, "logoman")
  .from($logoman, 0.3, {left:20, scale:2, ease:Back.easeOut}, "logoman")
  .from($learnMore, 0.2, {autoAlpha:0, scale:0.1, ease:Back.easeOut})
  .add(TweenMax.to($learnMore, 0.5, {boxShadow:"0px 0px 20px 2px #91f600", repeat:3, yoyo:true}), "+=0.8")
  .from("#replay", 0.4, {autoAlpha:0, rotation:"360_ccw"}, "-=1");
  return tl;
}

/*  This methods glues all 3 section timelines together.
    You can insert each timeline wherever you choose allowing our sub-timelines to overlap or have some "dead time" between them.
    By placing labels in the timeline via add("someLabel", somePosition) it makes it very easy for us to mark the insertion points and navigate to them
*/
    
function createMasterTimeline() {
  timeline = new TimelineLite({onUpdate:updateSlider, onComplete:showSlider});
  timeline.set($banner, {autoAlpha:1})
    .add(getIntroTextTimeline(), 0.3) //add the first animation at a time of 0.3 seconds
    .add("devices", "-=0.1") //add "devices" label just 0.1 seconds before the end of the previous animation for a bit of overlap
    .add(getDevicesTimeline(), "devices") //add the second animation and the "devices" label
    .add("tabletAnimation", "+=0.4")
    .add(getTabletAnimation(), "tabletAnimation"); 
  timeline.timeScale(1) // put a 4 in there, I dare you ;)
}  

// *** config buttons *** 

$learnMore.mouseenter(function(e){
  TweenMax.fromTo($learnMore, 0.6, {boxShadow:"0px 0px 0px 0px green"}, {boxShadow:"0px 0px 20px 2px #91f600", repeat:-1, yoyo:true});
});

$learnMore.mouseleave(function(e){
  TweenMax.to($learnMore, 0.2, {boxShadow:"0px 0px 0px 0px yellow"});
});

$replay.mouseenter(function(e){
  TweenLite.to($replay, 0.5, {rotation:"+=360", alpha:1});
})
  
$replay.mouseleave(function(e){
  TweenLite.to($replay, 0.5, {alpha:0.6});
})

$replay.click(function(){
  timeline.restart();
});

// *** config jQueryUI Slider ***

$slider.slider({
  range: false,
  min: 0,
  max: 100,
  step:0.1,
  slide: function ( event, ui ) {
    timeline.pause();
    //adjust the timeline's progress() based on slider value
    timeline.progress( ui.value/100 );
    }
});	

//this function is called by timeline's onUpdate callback
function updateSlider() {
  $slider.slider("value", timeline.progress() *100);
} 		

//this function is called by timeline's onComplete callback
function showSlider(){
  TweenLite.to($slider, 0.5, {autoAlpha:1});
}

//get this party started
initCSS();
createMasterTimeline();



/* file size notes
Some folks have asked about file size of this banner. It wasn't built with optimization in mind so the images are
bigger than they should be. TweenMax.min.js is used for convenience but the animation could be built with only TweenLite, TimelineLite and CSSPlugin for a 7kb savings. 

Modernizr and jQuery UI are loaded but not at all required for the animation.

Here's a breakdown:

TweenMax.min.js      28kb gzipped (could have gotten down to 22kb with only loading the tools I needed)
TextPlugin.min.js     1kb
Images               60kb (not optimized)
Asap font            26kb (could have optimized by building a custom font set with only the characters I needed)
jQuery               78kb gzipped (non-essential) could use a super small selector like Sizzle

So really the GSAP "overhead" is really only 28kb. 
When networks make wide-spread use of cdns the benefits of caching will kick in and the size will come close to a non-issue.
Sure, if you are stuck with a 50kb limit, 28kb is HUGE, but we believe that in a non-Flash world, that crippling limit will have to be revised. 
*/
!
999px

Console