body,
   html {
     margin: 0;
     padding: 0;
     display: block;
     width: 100vw;
     height: 100vh;
     overflow: hidden;
     background-color: #000;
   }
canvas {
     max-width: 100%;
     max-height: 100%;
     box-shadow: 0px 0px 10px 10px #000;
     bottom: 0;
     left: 0;
     margin: auto;
     padding:0px;
     overflow: auto;
     position: fixed;
     right: 0;
     top: 0;
     object-fit: contain;
   }