body {
  margin: 0;
  background: #70c5ce;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

canvas{
  box-shadow: 0 0 20px black;
}

.overlay{
  position: absolute;
  color: white;
  font-size: 32px;
  font-family: Arial, Helvetica, sans-serif;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  background-color: black;
  padding: 20px 40px;
  border-radius: 10px;
  z-index: 2;
}