* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-size: cover;
  background-position: center;
  color: #000000;
  overflow: hidden;
  height: 100vh;
}
canvas {
  display: block;
  width: 100%;
  height: 100%;
}