 @click="moveDown">↓</button>
              </div>
              <button class="text-xs py-1 px-2 rounded hover:bg-white focus:ring-2 focus:ring-white focus:ring-offset-2 focus:ring-offset-gray-900 bg-gray-400 text-gray-900" @click="moveRight">→</button>
            </div>
          </div>
        </div>
        <textarea v-show="tab === 'code'" class="px-4 bg-gray-900 text-gray-300 font-mono w-full text-xs min-h-[calc(100vh-56px-32px-56px)] border-0 focus:ring-0" readonly v-model="mermaidErd"></textare