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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

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HTML

            
              <section class="controls">
  <button id="open-button">Open</button>
</section>


<section id="modal-1" class="modal-container">
  
  <div class="modal-dialog">    
    <svg class="modal-svg" viewBox="0 0 100 100" preserveAspectRatio="none">
      <polygon class="modal-polygon" />
    </svg>
    
    <div class="modal-content">
      <h2>I'm a modal</h2>
      <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Omnis excepturi ut inventore consectetur quos rerum quibusdam accusamus, labore itaque assumenda consequatur cum saepe velit quidem ipsa facilis. Repellendus, reiciendis quam?</p>
    </div>
    
  </div>
</section>
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CSS

            
              button {
  cursor: pointer;
  padding: 0 6px;
  min-width: 88px;
  min-height: 36px;
}

.controls {
  padding: 24px;
}

.modal-container {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: rgba(0,0,0,0.15);  
  opacity: 0;
  visibility: hidden;
}

.modal-dialog {
  width: 70vmin;
  height: 70vmin;  
  position: relative;
  overflow: hidden;
}

.modal-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.modal-polygon {
  fill: #ab47bc;
}

.modal-content {
  position: relative;
  top: 0;
  left: 0;
  padding: 24px;  
  visibility: hidden;
  opacity: 0;  
  color: rgba(255,255,255,0.87);
}
!

JS

            
              console.clear();

var body = document.body;
var modal = createModal(document.querySelector("#modal-1"));
var openButton = document.querySelector("#open-button");

openButton.addEventListener("click", function() {
  modal.open();
});

function createModal(container) {
  
  var content = container.querySelector(".modal-content");
  var dialog = container.querySelector(".modal-dialog");
  var polygon = container.querySelector(".modal-polygon");
  var svg = container.querySelector(".modal-svg");
  
  var point1 = createPoint(45, 45);
  var point2 = createPoint(55, 45);
  var point3 = createPoint(55, 55);
  var point4 = createPoint(45, 55);
      
  var animation = new TimelineMax({    
      onReverseComplete: onReverseComplete,
      onStart: onStart,
      paused: true
    })     
    .to(point1, 0.3, {
      x: 15,
      y: 30,
      ease: Power4.easeIn
    }, 0)
    .to(point4, 0.3, {
      x: 5,
      y: 80,
      ease: Power2.easeIn
    }, "-=0.1")
    .to(point1, 0.3, {
      x: 0,
      y: 0,
      ease: Power3.easeIn
    })
    .to(point2, 0.3, {
      x: 100,
      y: 0,
      ease: Power2.easeIn
    }, "-=0.2")
    .to(point3, 0.3, {
      x: 100,
      y: 100,
      ease: Power2.easeIn
    })
    .to(point4, 0.3, {
      x: 0,
      y: 100,
      ease: Power2.easeIn
    }, "-=0.1")  
    .to(container, 1, {
      autoAlpha: 1
    }, 0)  
    .to(content, 1, {
      autoAlpha: 1
    })
  
  var modal = {
    animation: animation,
    container: container,
    content: content,
    dialog: dialog,    
    isOpen: false,
    open: open,
    close: close   
  };
  
  body.removeChild(container);
    
  function onClick() {
    
    if (modal.isOpen) {
      close();
    }
  }
  
  function onStart() {
    body.appendChild(container);
    container.addEventListener("click", onClick);
  }
  
  function onReverseComplete() {
    container.removeEventListener("click", onClick);
    body.removeChild(container);
  }
  
  function open() {
    modal.isOpen = true;
    animation.play().timeScale(2);
  }
  
  function close() {
    modal.isOpen = false;
    animation.reverse().timeScale(2.5);
  }
    
  function createPoint(x, y) {
    var point = polygon.points.appendItem(svg.createSVGPoint());
    point.x = x || 0;
    point.y = y || 0;
    return point;
  }
  
  return modal;
}
!
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