body {
  margin: 0;
  overflow: hidden;
  background-color: #000;
  font-family: Arial;
}

canvas {
  display: block;
}

button {
  position: absolute;
  top: 20px;
  z-index: 1;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}

#shuffleBtn {
  left: 20px;
}

#resetBtn {
  left: 120px;
}

#instructions {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 1;
  color: white;
  background: rgba(0, 0, 0, 0.5);
  padding: 10px;
  font-size: 14px;
  line-height: 1.6;
  border: 1px solid #ccc;
  border-radius: 5px;
  text-align: left;
  direction: ltr;
}