html,
body {
  margin: 0;
  padding: 0;
}

body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: black;
}

canvas { 
    position:absolute;
    top: 0;
    left: 0;
    width: 100%; 
    height: 100%;
    display: block; 
}

* {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}