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CSS

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <div class="animation"></div>

		<img src="http://twin-dev.net/experiments/codevember/maki/ressources/white-cloud.png" class="cloud">

		<h1 id="title" class="title"><span>press</span><span>release</span></h1>

		<svg viewbox="0 0 100 200" id="svg"  preserveAspectRatio="none" class="svg-path">
			  <path id="box" d="M0,0 H100 V100 Q50,200 0,100" fill="#00ADE6">
		</svg>
      
<aside class="Signature">
  <p>Codevember #29 - Twindev</p>
  <p>Diana Marchal & Nathalie Marchal</p>
</aside>
!

CSS 

              
                html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  width: 100%;
  -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.svg-path {
  position: fixed;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.cloud {
  position: absolute;
  z-index: 90;
  display: none;
  left: 120%;
}

.title {
  width: 100%;
  position: absolute;
  top: 70%;
  z-index: 1;
  font-family: Arial;
  text-align: center;
  font-size: 45px;
  color: #00ADE6;
}
.title span {
  display: inline-block;
  position: absolute;
  top: -20px;
  left: 0;
  width: 100%;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.title span:nth-child(2) {
  opacity: 0;
  transform: translate3d(0, 80%, 0);
}
.title.pressed span:nth-child(1) {
  opacity: 0;
  transform: translate3d(0, -80%, 0);
}
h1.pressed span:nth-child(2) {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

#box {
  cursor: pointer;
}


/* TWITTER BIRD ANIMATION */

.animation {
      background-image: url(http://twin-dev.net/experiments/codevember/maki/ressources/twitter-transparent.png);
      height: 110px; /* width and height of each frame */
      width: 150px;
      position: absolute;
      z-index: 100;
      left: 50%;
      top: 10%;
      transform: translate(-50%, -10%);
}

.animationBird {
  -webkit-animation: sprite-animation .6s steps(12,end) 8.5; /* steps = number of frames */
  animation: sprite-animation .6s steps(12,end) 8.5;
}

@-webkit-keyframes sprite-animation { /* Safari & Chrome */
      from { background-position: 0 0; }
      to { background-position: -1800px 0; } /* negative of sprite sheet width */
}
@keyframes sprite-animation {
      from { background-position: 0 0; }
      to { background-position: -1800px 0; } /* negative of sprite sheet width */
}

/* CLOUD ANIMATION */

.animationCloud {
  -webkit-animation: cloud-animation 5s linear;
          animation: cloud-animation 5s linear;
}

@-webkit-keyframes cloud-animation { /* Safari & Chrome */
  0% {
    left: 120%;
  }
  
  100% {
    left: -25%;
  }
}

@keyframes cloud-animation {
  0% {
    left: 120%;
  }
  
  100% {
    left: -25%;
  }
}

.Signature {
	position: absolute;
	z-index: 100;
	bottom: 20px;
	right: 20px;
	color: #00ADE6;
	line-height: .2;
	font-size: .7em;
	font-family: Open Sans, sans-serif;
}
!

JS 

              
                $( document ).ready(function() {

  var path = document.getElementById('box');
  var title = document.getElementById('title');

  var spring = .9;
  var friction = .8;
  var easing = .1;

  var sy = 200;
  var dy = 100;
  var vy = 0;
  var released = true;

  requestAnimationFrame(function update(){
    requestAnimationFrame(update);
    
    if (released) {
      vy += (dy - sy) * spring;
      sy += (vy *= friction); 
    } else {
      sy += (dy - sy) * easing;
    }
    
    path.setAttribute('d', 'M0,0 H100 V100 Q50,' + sy + ' 0,100');
  });


  var clicking = false;

  document.addEventListener('mousedown', function(){
    released = false;
    dy = 200;
    $(".animation").animate({
      top: "40%"
    }, 200);

    title.classList.add('pressed');
  });

  document.addEventListener('mouseup', function(){

    $(".animation").animate({
      top: "10%"
    });
    $(".animation").addClass("animationBird");
    $(".cloud").show().addClass("animationCloud");

    setTimeout(releaseHeader, 600);
   
    title.classList.remove('pressed');
  });
  	

  function releaseHeader() {
      released = true;
      dy = 100;

      setTimeout(removeClass, 4500);
  }

  function removeClass() {
    $(".animation").removeClass("animationBird");
    $(".cloud").removeClass("animationCloud");
  }

});
!
999px

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