    </div>
                        </div>
                        <canvas id="imageCanvas" class="hidden w-full h-full object-contain"></canvas>
                        <button id="changeImageButton" class="hidden absolute bottom-2 right-2 text-sm text-gray-500 underline">更换图片</button>
                    </div>
                    <div id="feedback" class="fixed bottom-4 right-4 hidden bg-green-100 border border-green-400 text-green-700 px-4 py-3 rounded shadow-lg" role="alert">
                   