<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="circle"></div>
<div class="popup">
  <h1>
    hey everyone !
  </h1>
  <span class="close">
    <i class="fa fa-close"></i>
  </span>
</div>

<button class="btn" id="btn">
    click me!
</button>
*{
  margin:0;
  padding:0;
  -webkit-box-sizing:border-box;
  box-sizing:border-box;
}

body{
  font-family: 'Open Sans Condensed', sans-serif;
  background: #24C6DC;  /* fallback for old browsers */
background: -webkit-linear-gradient(to right, #514A9D, #24C6DC);  /* Chrome 10-25, Safari 5.1-6 */
background: linear-gradient(to right, #514A9D, #24C6DC); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    -webkit-transition:.5s;
  transition:.5s;
}

.circle, .triangle{
  position:fixed;
  display:block;
}

.circle{
  border-radius:50%;
  -webkit-transform:scale(1);
  -ms-transform:scale(1);
  transform:scale(1);
  -webkit-transition:.5s;
  transition:.5s;
}

.circle:hover{
  -webkit-transform:scale(1.4);
  -ms-transform:scale(1.4);
  transform:scale(1.4);
}

.circle:nth-child(1){
  width:300px;
  height:300px;
  border:3px solid #fff;
  top:150px;
  left:-100px;
  border-radius:50%;
}

.circle:nth-child(2){
  width:120px;
  height:120px;
  right:90px;
  top:80px;
  background:#fff;
}

.circle:nth-child(3){
  width:200px;
  height:200px;
  right:300px;
  bottom:-90px;
  border:3px solid #fff;
}

.circle:nth-child(4){
  width:50px;
  height:50px;
  left:390px;
  top:50px;
  background:#fff;
}



.btn{
  position:absolute;
  left:50%;
  top:50%;
  -webkit-transform:scale(1);
  -ms-transform:scale(1);
  transform:scale(1);
  padding:15px 35px;
  border:1px solid #24C6DC;
  border-radius:50px;
  background:transparent;
  cursor:pointer;
  font-family: 'Open Sans Condensed', sans-serif;
  font-size:1.2em;
  color:#fff;
  -webkit-transition:.5s;
  transition:.5s;
}

.btn:focus{
  outline:none;
}




.btn:hover{
    -webkit-transform:scale(1.2);
  ransform:scale(1.2);
  background:#24C6DC;
  -moz-box-shadow: 0px 0px 20px rgba(56,56,56,.2);
-webkit-box-shadow: 0px 0px 20px rgba(56,56,56,.2);
box-shadow: 0px 0px 20px rgba(56,56,56,.2);
}


.popup{
  display:block;
  width:500px;
  height:250px;
  background:#fff;
  border-radius:5px;
  margin:80px auto;
  z-index:999;
  overflow:hidden;
  -webkit-transform:translateY(-300%);
  transform:translateY(-300%);
  -moz-box-shadow: 0px 0px 20px rgba(56,56,56,.2);
-webkit-box-shadow: 0px 0px 20px rgba(56,56,56,.2);
box-shadow: 0px 0px 20px rgba(56,56,56,.2);
  text-align:center;
  line-height:7em;
  font-size:2em;
  position:relative;
  -webkit-transition: all 900ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transition: all 900ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.popup h1{
  color:#8e54e9;
  text-transform:capitalize;
  font-weight:200;
  font-size:1.1em;
  position:relative;
  left:-200%;
    -webkit-transition: all 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transition: all 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  -webkit-transition-delay:900ms;
  transition-delay:900ms;
}

.popup .close{
  position:absolute;
  top:-80px;
  right:15px;
  font-size:.9em;
  font-weight:lighter;
  cursor:pointer;
  color:#8e54e9;
  -webkit-transition:.5s;
  transition:.5s;
}

.overlay{
  overflow-x:hidden;
  overflow-y:hidden;
   -webkit-transition:all 3s ease-in-out;
   transition:all 3s ease-in-out;
}

.overlay::before{
    content: " ";
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: 8;
    top: 0;
    left: 0;
    background: rgba(0, 0, 0, .5);
   -webkit-transition:3s;
   transition:3s ;
}

import {$ , jQuery} from "jquery";
window.jQuery = $;
window.$ = $;
(() => { 
  const   button = $('#btn');
  const   popup_window = $('.popup');
  const   close_button = popup_window.find('.close');

  button.on('click',()=>{
      popup_window.css({
      'transform':'translateY(0)',
      'z-index':'999'
    });
      $('body').addClass('overlay');
      popup_window.find('h1').animate({
         left:'0'
      },900);
      $(this).css({
        'z-index':'-1'
      });
  });
  
  close_button.on('click',() =>{
       $(this).parent('.popup').css({
          'transform':'translateY(-300%)'
       });
     
       $('body').removeClass('overlay');
       $(this).parent('.popup').siblings('.btn').css({
            'z-index':'1'
       });
      });
  
})();
View Compiled

External CSS

  1. https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js