
    <!-- Toolbar -->
    <div class="notebook-toolbar" role="toolbar" aria-label="Notebook controls">
        <div class="toolbar-group">
            <button class="btn btn-primary" id="btn-run-all" title="Run All Cells">
                â–¶ Run All
            </button>
            <button class="btn" id="btn-interrupt" title="Interrupt Execution">
                â¬› Interrupt
            </button>
            <button class="btn" id="btn-restart-kernel" title="Restart Kernel">
                ð�