Site Preloader

HTML

<div class="img-container">
    <h2>Welcome!</h2>
    <h3>Insert Subtitle here</h3>
</div>
<div class="preloader">
    <div class="circle circle1"></div>
    <div class="circle circle2"></div>
    <div class="circle circle3"></div>
</div>

CSS

body {
  padding: 0;
  margin: 0;
  background-color: #3e3c41;
  font-family: 'Montserrat', sans-serif;
}

body,
html {
  width: 100%;
  height: 100%;
}

.img-container {
  background-position: top center;
  background-size: cover;
  width: 100%;
  height: 100%;
  z-index: 5;
  position: absolute;
}
.img-container h2,
.img-container h3 {
  color: #fff;
  text-align: center;
  position: relative;
  text-shadow: 0 4px 4px rgba(0, 0, 0, 0.4);
}

h2 {
  font-size: 70px;
  margin-bottom: 0;
}

h3 {
  font-size: 40px;
  margin-bottom: 0;
}

.preloader {
  width: 100%;
  height: 100%;
  background-color: #3e3c41;
  z-index: 10;
  position: absolute;
}

.circle {
  border-radius: 190px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
  position: absolute;
  top: 50%;
  left: 50%;
  opacity: 0;
}

.circle1 {
  background-color: #7752d5;
  width: 240px;
  height: 240px;
  margin-top: -120px;
  margin-left: -120px;
}

.circle2 {
  background-color: #8362d9;
  width: 170px;
  height: 170px;
  margin-top: -85px;
  margin-left: -85px;
}

.circle3 {
  background-color: #9f88d6;
  width: 100px;
  height: 100px;
  margin-top: -50px;
  margin-left: -50px;
}

JS

var $circles = $('.circle'),

    tl = new TimelineMax(),

    random1 = getRandomNumber(),

    imgUrl1 = 'https://s3-us-west-2.amazonaws.com/s.cdpn.io/409269/valley.jpg?' + random1,

    image1 = $('<img>');

function loaderOut() {

  console.log('Image is done loading.');

}

function getRandomNumber() {

  return Math.floor(Math.random() * 10000);

}

image1.on('load', loaderOut);

image1.attr('src', imgUrl1);

TweenMax.set($circles, {scale: 0});

tl.insert(

  TweenMax.staggerTo($circles.toArray(), 1, {

    opacity: 1,

    scale: 1,

    ease: Power1.easeIn

  }, 0.2)

);

tl.insert(

  TweenMax.staggerTo($circles.toArray(), 0.5, {

    scale: 1.2,

    boxShadow: '0 25px 25px rgba(0, 0, 0, 0.4)',

    repeat: -1,

    yoyo: true,

    ease: Power1.easeOut

  }, 0.2), '-=0.4'

);

Preview