hange their color</div>
            <div id="file-structure"></div>
            <div id="merge-selection" class="panels custom-button normal-button">Merge selection</div>
            <div id="delete-selection" class="panels custom-button normal-button">Delete selection</div>
        </div>
        <div id="crop-content" class="popup-content">
            <input type="checkbox" id="crop-keep"><label for="crop-keep">Keep cropped parts in new files</label><br>
            <div id="crop-ok" class="panels custom