html, body {
  width: 100%;
  height: 100%;
    margin: 0px;
    padding: 0px;
  display: flex;
  justify-content: center;
  align-items: center;

}

html {  
  flex-direction: column;
}

body {
  flex-direction: row;
  overflow: hidden;
    touch-action: none;
  /*background: radial-gradient(#efefef, #000000);*/
  background: black;
}

canvas {
  margin: auto;
  display: block;
  height: auto;
}