trilium/src/views/dialogs/markdown_import.ejs

<div id="markdown-import-dialog" class="modal fade mx-auto" tabindex="-1" role="dialog">
    <div class="modal-dialog modal-lg" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Markdown import</h5>
                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
            </div>
            <div class="modal-body">
                <p>Because of browser sandbox it's not possible to directly read clipboard from JavaScript. Please paste the Markdown to import to textarea below and click on Import button</p>

                <textarea id="markdown-import-textarea" style="height: 340px; width: 100%"></textarea>
            </div>
            <div class="modal-footer">
                <button id="markdown-import-button" class="btn btn-primary">Import <kbd>Ctrl+Enter</kbd></button>
            </div>
        </div>
    </div>
</div>