html,
body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #071513;
  color: #fff;
  font-family: Arial, sans-serif;
}

canvas {
  display: block;
}

#controls {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 2;
  width: 210px;
  padding: 12px;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 10px;
}

button {
  width: 100%;
  padding: 10px;
  border: 0;
  border-radius: 7px;
  background: #b7d58b;
  color: #10201b;
  font-weight: bold;
  cursor: pointer;
}

label {
  display: block;
  margin-top: 10px;
  font-size: 14px;
}

p {
  margin: 9px 0 0;
  font-size: 14px;
}

input {
  width: 100%;
  margin-top: 5px;
}