<div class='light x1'></div>
  <div class='light x2'></div>
  <div class='light x3'></div>
  <div class='light x4'></div>
  <div class='light x5'></div>
  <div class='light x6'></div>
  <div class='light x7'></div>
  <div class='light x8'></div>
  <div class='light x9'></div>

body {
    margin: 0;
    height: 100vh;
    font-weight: 100;
    background: radial-gradient(#03A39B,#046382);
    -webkit-overflow-Y: hidden;
    -moz-overflow-Y: hidden;
    -o-overflow-Y: hidden;
    overflow-y: hidden;
    -webkit-animation: fadeIn 1 1s ease-out;
    -moz-animation: fadeIn 1 1s ease-out;
    -o-animation: fadeIn 1 1s ease-out;
    animation: fadeIn 1 1s ease-out;
}


.light {
    position: absolute;
    width: 0px;
    opacity: .15;
    background-color: white;
    box-shadow: #e9f1f1 0px 0px 20px 2px;
    opacity: 0;
    top: 100vh;
    bottom: 0px;
    left: 0px;
    right: 0px;
    margin: auto;
}

.x1{
  -webkit-animation: floatUp 4s infinite linear;
  -moz-animation: floatUp 4s infinite linear;
  -o-animation: floatUp 4s infinite linear;
  animation: floatUp 4s infinite linear;
   -webkit-transform: scale(1.0);
   -moz-transform: scale(1.0);
   -o-transform: scale(1.0);
  transform: scale(1.0);
}

.x2{
  -webkit-animation: floatUp 7s infinite linear;
  -moz-animation: floatUp 7s infinite linear;
  -o-animation: floatUp 7s infinite linear;
  animation: floatUp 7s infinite linear;
  -webkit-transform: scale(1.6);
  -moz-transform: scale(1.6);
  -o-transform: scale(1.6);
  transform: scale(1.6);
  left: 15%;
}

.x3{
  -webkit-animation: floatUp 2.5s infinite linear;
  -moz-animation: floatUp 2.5s infinite linear;
  -o-animation: floatUp 2.5s infinite linear;
  animation: floatUp 2.5s infinite linear;
  -webkit-transform: scale(.5);
  -moz-transform: scale(.5);
  -o-transform: scale(.5);
  transform: scale(.5);
  left: -15%;
}

.x4{
  -webkit-animation: floatUp 4.5s infinite linear;
  -moz-animation: floatUp 4.5s infinite linear;
  -o-animation: floatUp 4.5s infinite linear;
  animation: floatUp 4.5s infinite linear;
  -webkit-transform: scale(1.2);
  -moz-transform: scale(1.2);
  -o-transform: scale(1.2);
  transform: scale(1.2);
  left: -34%;
}

.x5{
  -webkit-animation: floatUp 8s infinite linear;
  -moz-animation: floatUp 8s infinite linear;
  -o-animation: floatUp 8s infinite linear;
  animation: floatUp 8s infinite linear;
  -webkit-transform: scale(2.2);
  -moz-transform: scale(2.2);
  -o-transform: scale(2.2);
  transform: scale(2.2);
  left: -57%;
}

.x6{
  -webkit-animation: floatUp 3s infinite linear;
  -moz-animation: floatUp 3s infinite linear;
  -o-animation: floatUp 3s infinite linear;
  animation: floatUp 3s infinite linear;
  -webkit-transform: scale(.8);
  -moz-transform: scale(.8);
  -o-transform: scale(.8);
  transform: scale(.8);
  left: -81%;
}

.x7{
  -webkit-animation: floatUp 5.3s infinite linear;
  -moz-animation: floatUp 5.3s infinite linear;
  -o-animation: floatUp 5.3s infinite linear;
  animation: floatUp 5.3s infinite linear;
  -webkit-transform: scale(3.2);
  -moz-transform: scale(3.2);
  -o-transform: scale(3.2);
  transform: scale(3.2);
  left: 37%;
}

.x8{
  -webkit-animation: floatUp 4.7s infinite linear;
  -moz-animation: floatUp 4.7s infinite linear;
  -o-animation: floatUp 4.7s infinite linear;
  animation: floatUp 4.7s infinite linear;
  -webkit-transform: scale(1.7);
  -moz-transform: scale(1.7);
  -o-transform: scale(1.7);
  transform: scale(1.7);
  left: 62%;
}

.x9{
  -webkit-animation: floatUp 4.1s infinite linear;
  -moz-animation: floatUp 4.1s infinite linear;
  -o-animation: floatUp 4.1s infinite linear;
  animation: floatUp 4.1s infinite linear;
  -webkit-transform: scale(0.9);
  -moz-transform: scale(0.9);
  -o-transform: scale(0.9);
  transform: scale(0.9);
  left: 85%;
}


@-webkit-keyframes floatUp{
  0%{top: 100vh; opacity: 0;}
  25%{opacity: 1;}
  50%{top: 0vh; opacity: .8;}
  75%{opacity: 1;}
  100%{top: -100vh; opacity: 0;}
}
@-moz-keyframes floatUp{
  0%{top: 100vh; opacity: 0;}
  25%{opacity: 1;}
  50%{top: 0vh; opacity: .8;}
  75%{opacity: 1;}
  100%{top: -100vh; opacity: 0;}
}
@-o-keyframes floatUp{
  0%{top: 100vh; opacity: 0;}
  25%{opacity: 1;}
  50%{top: 0vh; opacity: .8;}
  75%{opacity: 1;}
  100%{top: -100vh; opacity: 0;}
}
@keyframes floatUp{
  0%{top: 100vh; opacity: 0;}
  10%{opacity: .1;}
  30%{top: 0vh; opacity: .3;}
  40%{opacity: .4;}
  100%{top: -100vh; opacity: 0;}
}

@-webkit-keyframes fadeIn{
  from{opacity: 0;}
  to{opacity: .6;}
}

@-moz-keyframes fadeIn{
  from{opacity: 0;}
  to{opacity: .6;}
}

@-o-keyframes fadeIn{
  from{opacity: 0;}
  to{opacity: .6;}
}

@keyframes fadeIn{
  from{opacity: 0;}
  to{opacity: .6;}
}

@-webkit-keyframes fadeOut{
  0%{opacity: 0;}
  30%{opacity: 1;}
  40%{opacity: .4;}
  60%{opacity: .6;}
}

@-moz-keyframes fadeOut{
  0%{opacity: 0;}
  30%{opacity: 1;}
  40%{opacity: .4;}
  60%{opacity: .6;}
}

@-o-keyframes fadeOut{
  0%{opacity: 0;}
  30%{opacity: 1;}
  40%{opacity: .4;}
  60%{opacity: .6;}
}

@keyframes fadeOut{
  0%{opacity: 0;}
  30%{opacity: 1;}
  40%{opacity: .4;}
  60%{opacity: .6;}
}

@-webkit-keyframes finalFade{
  0%{opacity: 0;}
  30%{opacity: 1;}
  40%{opacity: .4;}
  60%{opacity: .6;}
}

@-moz-keyframes finalFade{
  0%{opacity: 0;}
  30%{opacity: 1;}
  40%{opacity: .4;}
  60%{opacity: .6;}
}

@-o-keyframes finalFade{
  0%{opacity: 0;}
  30%{opacity: 1;}
  40%{opacity: .4;}
  60%{opacity: .6;}
}

@keyframes finalFade{
  0%{opacity: 0;}
  30%{opacity: 1;}
  40%{opacity: .4;}
  60%{opacity: .6;}
}