*{
    padding: 0;
    margin: 0;
    text-align: center;
  }
  body {
    overflow: hidden;
  }
  
  #canvas{
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    opacity: 0.2;
  }
  
  .coloriz{
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    margin: auto;
  }

  
  
@keyframes filter-animation {
    0% {
      filter: hue-rotate(0deg);
    }
    
    50% {
      filter: hue-rotate(360deg);
    }
    
    100% {
      filter: hue-rotate(0deg);
    }
  }
   
  
.coloriz  { 
    animation: filter-animation 10s infinite;
  }