body {
  background: #111;
  color: white;
  text-align: center;
  font-family: Arial;
}

#gun {
  font-size: 60px;
  margin: 20px;
}

.item {
  font-size: 40px;
  display: inline-block;
  margin: 10px;
  opacity: .3;
  cursor: not-allowed;
  transition: .2s;
}

.item.enabled {
  opacity: 1;
  cursor: pointer;
}

.item.enabled:hover {
  transform: scale(1.2);
}

button {
  margin: 10px;
  padding: 10px 15px;
  font-size: 16px;
}