body {
  margin: 0;
  font-family: "Arial", sans-serif;
  background-color: #fff6e5;
  color: #4b2e2e;
}

#ui {
  text-align: center;
  padding: 10px;
}

#stats {
  background-color: #6b4226;
  color: white;
  padding: 10px;
  font-weight: bold;
}
#startWaveBtn {
  position: absolute;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #6b4226;
  color: white;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  z-index: 10;
}
#startWaveBtn:hover {
  background-color: #8b5a2b;
}
canvas {
  display: block;
  margin: 0 auto;
  background-color: #fce5b3;
  border: 2px solid #6b4226;
}