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HTML 

              
                <div class="content content1">
  <h1>#1 Scale</h1>
  <div class="hello">Fires on page load</div>
  </div>
<div class="content content2">
  <h1>#2 Split Text</h1>
    <div class="message">GreenSock Rocks!</div>
  </div>
<div class="content content3">
  <h1>#3 Beware of Dog</h1>
  <div class="dog">
    <div class="woof"></div>
  </div>
</div>
<div class="content content4">
  <h1>#4 Fancy Div</h1>
  <div class="box">I'm Fancy</div>
  </div>
<div class="content content5">
  <h1>#5 Morphin' Time</h1>
<svg id="morphIt" xmlns="http://www.w3.org/2000/svg" width="400" height="300" viewBox="0 0 400 300">
 
  <path id="star" d="M200,33.21,238,110.1l84.85,12.33-61.4,59.85,14.5,84.51L200,226.89l-75.9,39.9,14.5-84.51L77.2,122.43l84.85-12.33Z" fill="#ffffff"/>
  <path id="circle" d="M302.5,150A102.5,102.5,0,1,1,200,47.5,102.5,102.5,0,0,1,302.5,150Z" fill="#fcee21"/>
  <path id="triangle" d="M319.65,253.62H80.35L200,46.38Z" fill="#fcee21"/>
</svg>
  </div>
<div class="content content6">
  <h1>#6 DrawSVG</h1>
    <svg id="drawIt" xmlns="http://www.w3.org/2000/svg" width="400" height="100" viewBox="0 0 400 100">
  
  
  <g stroke="white" stroke-width="2" fill="transparent">
    <path d="M42.83,128.61c-1.27,0-4.16.08-5.44.08H28.64a27.61,27.61,0,0,1-.51-5.61,28.44,28.44,0,0,1,.51-5.7H70.71a19.45,19.45,0,0,1,.69,5.19c0,4.51-2.21,6.12-7.15,6.12H61.79c-1.28,0-4.08-.08-5.36-.08h-.08c0,2.38.08,4,.08,6.29v40.54a39.7,39.7,0,0,1-6.8.52,39.13,39.13,0,0,1-6.8-.52Z" transform="translate(0 -99)"/>
    <path d="M109.47,157.42c0-2.38.09-4,.09-6.29-1.19,0-3.06.09-4.25.09H95.45c-1.19,0-3-.09-4.25-.09,0,2.3.08,3.91.08,6.29v18a38.5,38.5,0,0,1-6.8.52,40.36,40.36,0,0,1-6.8-.52V117.38a41.32,41.32,0,0,1,6.8-.51,39.41,39.41,0,0,1,6.8.51v16.24c0,2.38-.08,4-.08,6.29,1.27,0,3.06-.08,4.25-.08h9.86c1.19,0,3.06.08,4.25.08,0-2.29-.09-3.91-.09-6.29V117.38a45.66,45.66,0,0,1,13.61,0v58.06a37.4,37.4,0,0,1-6.64.52,41,41,0,0,1-7-.52Z" transform="translate(0 -99)"/>
    <path d="M175,169.15c-.68,4.25-3.74,6.55-8.67,6.55H143.73c-4.85,0-7.82-3.06-7.82-7.91V118l.59-.6h36.64a26,26,0,0,1,.51,5.36,19.52,19.52,0,0,1-1.19,6H149.25c0,2.29.09,3.91.09,6.12v5.95c2.21-.09,4.59-.09,5.78-.09h13a20.21,20.21,0,0,1,0,11.05H149.34v6.46c0,2.21-.09,3.83-.09,6.12v.09c2-.09,3.91-.17,6.29-.17h19.72A35.52,35.52,0,0,1,175,169.15Z" transform="translate(0 -99)"/>
    <path d="M242.41,169.15c-.68,4.25-3.74,6.55-8.67,6.55H211.13c-4.85,0-7.82-3.06-7.82-7.91V118l.59-.6h36.64a25.37,25.37,0,0,1,.51,5.36,19.24,19.24,0,0,1-1.19,6h-23.2c0,2.29.08,3.91.08,6.12v5.95c2.21-.09,4.59-.09,5.78-.09h13a20.46,20.46,0,0,1,0,11.05H216.74v6.46c0,2.21-.08,3.83-.08,6.12v.09c2-.09,3.91-.17,6.29-.17h19.72A34.16,34.16,0,0,1,242.41,169.15Z" transform="translate(0 -99)"/>
    <path d="M298.34,117.38v57.81a49.56,49.56,0,0,1-8.24.77,59.84,59.84,0,0,1-7.91-.52L268.85,145c-2-4.33-3.66-8.75-4.85-12l-.25.08c.59,7.23,1,18.36,1,25.42v16.91a33.54,33.54,0,0,1-6.21.52,36,36,0,0,1-6.46-.52v-57.8a46.83,46.83,0,0,1,8.07-.77,60.11,60.11,0,0,1,7.83.51l13.17,30.35c2.13,5,4.08,9.78,5.27,12.92l.34-.17c-.68-7.9-1-19.21-1-25.07V125c0-6,2.38-8.25,7.57-8.25h4.42Z" transform="translate(0 -99)"/>
    <path d="M348.83,171.7C344.92,174.76,338,176,333.28,176c-7.4,0-14-.18-21.43-.35l-.59-.59V117.81l.59-.6c7.32-.25,14-.34,21.43-.34,4.67,0,11.64,1.19,15.55,4.26,8,6.29,9.52,15.38,9.52,25.24S356.91,165.41,348.83,171.7Zm-15.64-44.2c-2.89,0-5.35,0-8.41-.08v38c3.06-.08,5.52-.08,8.41-.08,9.78,0,11.22-10.29,11.22-19S343,127.5,333.19,127.5Z" transform="translate(0 -99)"/>
  </g>
</svg>
  </div>
<div class="trigger">Trigger</div>
!

CSS 

              
                * {
  box-sizing: border-box;
}

body {
  padding: 0;
  margin: 0;
  font-family: "Roboto", sans-serif;
  color: white;
}

.content {
  width: 100%;
  height: 101vh;
  position: relative;
}

.content1 {
  background: slategray;
}
.content2 {
  background: forestgreen;
}
.content3 {
  background: midnightblue;
}
.content4 {
  background: indigo;
}
.content5 {
  background: goldenrod;
}
.content6 {
  background: cornflowerblue;
}

.dog {
  width: 163px;
  height: 161px;
  background: url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/314556/dog.png");
  position: absolute;
  top: 50%;
  left: 0;
}
.woof {
  width: 100px;
  height: 100px;
  background: url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/314556/woofCartoon.png");
  position: absolute;
  top: -60px;
  right: -70px;
  
}

h1 {
  padding: 20px;
  margin: 0;
  text-align: center;
  color: white;
}

.trigger {
  position: fixed;
  right: 10px;
  text-decoration: underline;
  
}

.box {
  width:150px;
  height: 100px;
  background-color: black;
  color: white;
  text-align: center;
  line-height: 100px;
  position: absolute;
  left: 50%;
  top: 25%;
}

.hello, .message, #morphIt, #drawIt {
  font-size: 60px;
  position: absolute;
  top:50%;
  left: 50%;
  width: 100%;
  text-align: center;
}

#triangle, #circle {
  visibility: hidden;
}
!

JS 

              
                console.clear();
const threshold = 0.7; // trigger
const options = {
  root: null,
  rootMargin: '0px',
  threshold: threshold
};
const observer = new IntersectionObserver(animHandler, options);
const targets = document.querySelectorAll(".content");
const ar = [].slice.call(targets); 
let animations = [];


let count = 0;

for (let target of ar) {
  animations[count] = new TimelineMax({paused:true});  
  observer.observe(target);
  count++;
}


TweenMax.set(".dog", {yPercent:-50, xPercent:-100});
TweenMax.set(".box, .hello, .message, #morphIt, #drawIt", {yPercent:-50, xPercent:-50});
TweenMax.set(".trigger", {bottom:threshold * 100 + "%"});

// timeline for each section
animations[0].from(".hello", 1, {scale:0, transformOrigin:"center bottom"});

let mySplitText = new SplitText(".message", {type:"chars, words, lines"});
animations[1].staggerFrom(mySplitText.chars, 0.2, {y: -50, rotation:180, opacity: 0}, 0.05);

animations[2].to(".dog", 0.5, {left:"50%", xPercent:-50, ease:Back.easeOut.config(1.4)});
animations[2].from(".woof", 0.22, {scale:0, transformOrigin:"left bottom", ease:Back.easeOut.config(1.4)}, "-=0.1");

animations[3].to(".box", 0.5, {rotation:360});
animations[3].to(".box", 0.5, {top:"50%", width:300, backgroundColor:"white", color:"black"});

animations[4].to("#star", 0.3, {morphSVG:"#circle", ease:Back.easeOut.config(1.7)});
animations[4].to("#star", 0.3, {morphSVG:"#triangle", ease:Back.easeOut.config(1.7)}, "+=0.5");
animations[4].to("#star", 0.3, {morphSVG:"#star", ease:Back.easeOut.config(1.7)}, "+=0.5");

animations[5].staggerFromTo("#drawIt path", 1, {drawSVG:0}, {drawSVG:true},0.1);
animations[5].staggerTo("#drawIt path", 0.5, {fill:'white'}, 0.1, 0.5);

// observer handler
function animHandler(targets, observer) {
  for (var entry of targets) {
    if (entry.isIntersecting) {
      let i = ar.indexOf(entry.target);
      animations[i].play();
     
    } else {
        return;
    }
  }
}
!
999px

Console