Update aiidalab_widgets_base/databases.py

Co-authored-by: Daniel Hollas <[email protected]>

aiidalab_widgets_base/databases.py

@@ -165,7 +165,7 @@ def __init__(
                         """
                         <div style="margin: 10px 0; padding: 10px; background-color: #ffcc00; color: black; border-left: 6px solid #ffeb3b;">
                             <i class="fa fa-exclamation-triangle" aria-hidden="true"></i>
-                            &nbsp;This widget requires the <code>optimade-client</code> package to be installed.
+                            &nbsp;This widget requires the <code>optimade-client</code> package to be installed.<br>
                             Please run <code>pip install optimade-client</code> to install the missing package.
                         </div>"""
                     )