Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+=========================
+Debug scrollable overflow
+=========================
+
+A `scroll container <https://developer.mozilla.org/en-US/docs/Glossary/Scroll_container>`_ is created by applying `overflow: scroll <https://developer.mozilla.org/en-US/docs/Web/CSS/overflow>`_ to a container, or `overflow: auto <https://developer.mozilla.org/en-US/docs/Web/CSS/overflow>`_ when there is enough content to cause overflow. The Firefox DevTools make it easy to discover both scrollable elements and any elements that are causing overflow.
+
+
+In the :ref:`HTML Pane <page_inspector_ui_tour_html_pane>`, ascrollable element has the ``scroll`` badge next to it, as shown in the following image:
+
+.. image:: scroll_hover.png
+  :alt: HTML Pane Scroll badge
+  :class: center
+
+You can toggle the ``scroll`` badge to highlight elements causing an overflow, expanding nodes as needed to make the nodes visible:
+
+.. image:: scroll_badge_pressed.png
+  :alt: Scroll badge toggled on 1
+  :class: center
+
+You will also see an ``overflow`` badge next to the node causing the overflow.
+
+.. image:: overflow_badge.png
+  :alt: HTML Pane: Overflow badge
+  :class: center