body {
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: #1a1a1a;
  overflow: hidden;
}

#coin-container {
  width: 100vw;
  height: 100vh;
  position: relative;
}

canvas {
  position: absolute;
  top: 0;
  left: 0;
}