title: Dynamically adjust sticky toolbar's position in CKEditor 5
body: <p>Here's the <a href="https://ckeditor.com/docs/ckeditor5/latest/examples/builds/classic-editor.html" rel="nofollow noreferrer">Classic editor demo page</a>. Please add some <a href="https://www.lipsum.com/feed/html" rel="nofollow noreferrer">text</a> until it's height is bigger than your screen. Then if you click inside the editor and start scrolling down, you'll see that the toolbar becomes sticky when it hits the top of the page.<br>
  It uses <a href="https://ckeditor.com/docs/ckeditor5/latest/api/module_ui_panel_sticky_stickypanelview-StickyPanelView.html#member-viewportTopOffset" rel="nofollow noreferrer"><code>viewportTopOffset</code> property</a>.  </p>
  
  <p>How can I change the toolbars position on window resize or if the height of the fixed header changes?</p>