#bluetooth-symbol,
#usb-symbol {
  transition: all .35s ease-in-out;
}

#toggle-ble-usb.bluetooth #usb-symbol {
  transform: translate(-50%, -50%) rotate(-90deg) scale(0);
  opacity: 0;
}

#toggle-ble-usb.bluetooth #bluetooth-symbol {
  transform: translate(-50%, -50%) rotate(0deg) scale(1);
  opacity: 1;
}

#toggle-ble-usb:not(.bluetooth) #bluetooth-symbol {
  transform: translate(-50%, -50%) rotate(90deg) scale(0);
  opacity: 0;
}