body {
  background-image: url("bg.png");
  background-repeat: no-repeat;
  background-size: cover;
}
#score {
  display: inline-block;
}
div {
  font-size: 25px;
  font-weight: bold;
  font-family: "Gill Sans", "Gill Sans MT", Calibri, "Trebuchet MS", sans-serif;
  text-align: center;
  color: maroon;
}
canvas {
  display: block;
  margin: 0 auto;
}
.btn {
  border-radius: 18px;
  background-color: slategray;
  color: maroon;
  cursor: pointer;
}