bg.css

body {
    margin: 0;
    height: 100vh;
    font-weight: 100;
    background: radial-gradient(#a23982,#1f1013);
    -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;
  }
  
  button{
  position: absolute;
  border: 2px solid white;
  background: transparent;
  font-family: 'Roboto', sans-serif;
  color: white;
  width: 250px;
  height: 50px;
  font-size: 2em;
  border-radius: 5px;
  opacity: .5;
  top: 60vh;
  bottom: 0px;
  left: 0px;
  right: 0px;
  margin: auto;
  transition: .3s;
  }
  
  button:hover{
  border: 2px solid #104F55;
  background-color: rgba(365,365,365,0.5);
  cursor: pointer;
  color: #104F55;
  opacity: .8;
  transition: .3s;
  box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2);
  }
  
  .light {
    position: absolute;
    width: 0px;
    opacity: .75;
    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%;
  }
  
  button:focus{
  outline: none;
  }
  
  @-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;}
  25%{opacity: 1;}
  50%{top: 0vh; opacity: .8;}
  75%{opacity: 1;}
  100%{top: -100vh; opacity: 0;}
  }
  
  .header{
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Roboto', sans-serif;
  font-weight: 200;
  color: white;
  font-size: 2em;
  }
  
  #head1, #head2,#head3, #head4, #head5{
  opacity: 0;
  }
  
  #head1{
  -webkit-animation: fadeOut 1 5s ease-in;
  -moz-animation: fadeOut 1 5s ease-in;
  -o-animation: fadeOut 1 5s ease-in;
  animation: fadeOut 1 5s ease-in;
  }
  
  #head2{
  -webkit-animation: fadeOut 1 5s ease-in;
  -moz-animation: fadeOut 1 5s ease-in;
  -o-animation: fadeOut 1 5s ease-in;
  animation: fadeOut 1 5s ease-in;
  -webkit-animation-delay: 6s;
  -moz-animation-delay: 6s;
  -o-animation-delay: 6s;
  animation-delay: 6s;
  }
  
  #head3{
  -webkit-animation: fadeOut 1 5s ease-in;
  -moz-animation: fadeOut 1 5s ease-in;
  -o-animation: fadeOut 1 5s ease-in;
  animation: fadeOut 1 5s ease-in;
  -webkit-animation-delay: 12s;
  -moz-animation-delay: 12s;
  -o-animation-delay: 12s;
  animation-delay: 12s;
  }
  
  #head4{
  -webkit-animation: fadeOut 1 5s ease-in;
  -moz-animation: fadeOut 1 5s ease-in;
  -o-animation: fadeOut 1 5s ease-in;
  animation: fadeOut 1 5s ease-in;
  -webkit-animation-delay: 17s;
  -moz-animation-delay: 17s;
  -o-animation-delay: 17s;
  animation-delay: 17s;
  }
  
  #head5{
  -webkit-animation: finalFade 1 5s ease-in;
  -moz-animation: finalFade 1 5s ease-in;
  -o-animation: finalFade 1 5s ease-in;
  animation: finalFade 1 5s ease-in;
  -webkit-animation-fill-mode: forwards;
  -moz-animation-fill-mode: forwards;
  -o-animation-fill-mode: forwards;
  animation-fill-mode: forwards;
  -webkit-animation-delay: 22s;
  -moz-animation-delay: 22s;
  -o-animation-delay: 22s;
  animation-delay: 22s;
  }
  
  @-webkit-keyframes fadeIn{
  from{opacity: 0;}
  to{opacity: 1;}
  }
  
  @-moz-keyframes fadeIn{
  from{opacity: 0;}
  to{opacity: 1;}
  }
  
  @-o-keyframes fadeIn{
  from{opacity: 0;}
  to{opacity: 1;}
  }
  
  @keyframes fadeIn{
  from{opacity: 0;}
  to{opacity: 1;}
  }
  
  @-webkit-keyframes fadeOut{
  0%{opacity: 0;}
  30%{opacity: 1;}
  80%{opacity: .9;}
  100%{opacity: 0;}
  }
  
  @-moz-keyframes fadeOut{
  0%{opacity: 0;}
  30%{opacity: 1;}
  80%{opacity: .9;}
  100%{opacity: 0;}
  }
  
  @-o-keyframes fadeOut{
  0%{opacity: 0;}
  30%{opacity: 1;}
  80%{opacity: .9;}
  100%{opacity: 0;}
  }
  
  @keyframes fadeOut{
  0%{opacity: 0;}
  30%{opacity: 1;}
  80%{opacity: .9;}
  100%{opacity: 0;}
  }
  
  @-webkit-keyframes finalFade{
  0%{opacity: 0;}
  30%{opacity: 1;}
  80%{opacity: .9;}
  100%{opacity: 1;}
  }
  
  @-moz-keyframes finalFade{
  0%{opacity: 0;}
  30%{opacity: 1;}
  80%{opacity: .9;}
  100%{opacity: 1;}
  }
  
  @-o-keyframes finalFade{
  0%{opacity: 0;}
  30%{opacity: 1;}
  80%{opacity: .9;}
  100%{opacity: 1;}
  }
  
  @keyframes finalFade{
  0%{opacity: 0;}
  30%{opacity: 1;}
  80%{opacity: .9;}
  100%{opacity: 1;}
  }
  
  #footer{
  font-family: 'Roboto', sans-serif;
  font-size: 1.2em;
  color: white;
  position: fixed;
  -webkit-transform: translate(95vw,90vh);
  -moz-transform: translate(95vw,90vh);
  transform: translate(95vw,90vh);
  transform: translate(95vw,90vh);
  }