chore(ia): Reorganize CSS pages - part 1 (moving extension directories) (#41720)

move extensions under reference

Author: dipikabh

files/en-us/_redirects.txt

@@ -459,8 +459,8 @@
 /en-US/docs/CSS/CSS3_Columns	/en-US/docs/Web/CSS/CSS_multicol_layout/Using_multicol_layouts
 /en-US/docs/CSS/CSS_Properties_Reference	/en-US/docs/Web/CSS/Reference#index
 /en-US/docs/CSS/CSS_Reference	/en-US/docs/Web/CSS/Reference
-/en-US/docs/CSS/CSS_Reference/Mozilla_Extensions	/en-US/docs/Web/CSS/Mozilla_Extensions
-/en-US/docs/CSS/CSS_Reference/Webkit_Extensions	/en-US/docs/Web/CSS/WebKit_Extensions
+/en-US/docs/CSS/CSS_Reference/Mozilla_Extensions	/en-US/docs/Web/CSS/Reference/Mozilla_extensions
+/en-US/docs/CSS/CSS_Reference/Webkit_Extensions	/en-US/docs/Web/CSS/Reference/Webkit_extensions
 /en-US/docs/CSS/CSS_animated_properties	/en-US/docs/Web/CSS/CSS_animated_properties
 /en-US/docs/CSS/CSS_animations	/en-US/docs/Web/CSS/CSS_animations/Using_CSS_animations
 /en-US/docs/CSS/CSS_flex-wrap	/en-US/docs/Web/CSS/flex-wrap
@@ -477,7 +477,7 @@
 /en-US/docs/CSS/Counters	/en-US/docs/Web/CSS/CSS_counter_styles/Using_CSS_counters
 /en-US/docs/CSS/Currentcolor	/en-US/docs/Web/CSS/color_value#currentcolor_keyword
 /en-US/docs/CSS/Descendant_selectors	/en-US/docs/Web/CSS/Descendant_combinator
-/en-US/docs/CSS/Draft_Implementations_of_CSS_Features	/en-US/docs/Web/CSS/Mozilla_Extensions
+/en-US/docs/CSS/Draft_Implementations_of_CSS_Features	/en-US/docs/Web/CSS/Reference/Mozilla_extensions
 /en-US/docs/CSS/FAQ	/en-US/docs/Web/CSS
 /en-US/docs/CSS/Flexbox	/en-US/docs/Web/CSS/CSS_flexible_box_layout/Basic_concepts_of_flexbox
 /en-US/docs/CSS/Flexbox-redirect-1	/en-US/docs/Web/CSS/CSS_flexible_box_layout/Basic_concepts_of_flexbox
@@ -1086,11 +1086,11 @@
 /en-US/docs/CSSUnitValue	/en-US/docs/Web/API/CSSUnitValue/CSSUnitValue
 /en-US/docs/CSS_Counters	/en-US/docs/Web/CSS/CSS_counter_styles/Using_CSS_counters
 /en-US/docs/CSS_Reference	/en-US/docs/Web/CSS/Reference
-/en-US/docs/CSS_Reference/Draft_Implementations_of_CSS_Features	/en-US/docs/Web/CSS/Mozilla_Extensions
-/en-US/docs/CSS_Reference/Draft_Implementations_of_CSS_Features_in_Mozilla	/en-US/docs/Web/CSS/Mozilla_Extensions
+/en-US/docs/CSS_Reference/Draft_Implementations_of_CSS_Features	/en-US/docs/Web/CSS/Reference/Mozilla_extensions
+/en-US/docs/CSS_Reference/Draft_Implementations_of_CSS_Features_in_Mozilla	/en-US/docs/Web/CSS/Reference/Mozilla_extensions
 /en-US/docs/CSS_Reference/List_of_Proprietary_CSS_Features	/en-US/docs/Web/CSS/Reference
-/en-US/docs/CSS_Reference/Mozilla_Extensions	/en-US/docs/Web/CSS/Mozilla_Extensions
-/en-US/docs/CSS_Reference:Mozilla_Extensions	/en-US/docs/Web/CSS/Mozilla_Extensions
+/en-US/docs/CSS_Reference/Mozilla_Extensions	/en-US/docs/Web/CSS/Reference/Mozilla_extensions
+/en-US/docs/CSS_Reference:Mozilla_Extensions	/en-US/docs/Web/CSS/Reference/Mozilla_extensions
 /en-US/docs/CSS_Support_Charts	/en-US/docs/Web/CSS
 /en-US/docs/CSS_flex-wrap	/en-US/docs/Web/CSS/flex-wrap
 /en-US/docs/CSS_transform_functions	/en-US/docs/Web/CSS/transform
@@ -6694,7 +6694,7 @@
 /en-US/docs/Mozilla/Thunderbird/Autoconfiguration/FileFormat/Definition	https://www.bucksch.org/1/projects/thunderbird/autoconfiguration/config-file-format.html
 /en-US/docs/Mozilla/Thunderbird/Autoconfiguration/FileFormat/HowTo	https://www.bucksch.org/1/projects/thunderbird/autoconfiguration/how-to-create-your-own-config-file.html
 /en-US/docs/Mozilla/Virtualenv	https://github.com/mdn/archived-content/tree/main/files/en-us/mozilla/virtualenv
-/en-US/docs/Mozilla_CSS_Extensions	/en-US/docs/Web/CSS/Mozilla_Extensions
+/en-US/docs/Mozilla_CSS_Extensions	/en-US/docs/Web/CSS/Reference/Mozilla_extensions
 /en-US/docs/Mozilla_MathML_Project/Authoring	/en-US/docs/Web/MathML/Guides/Authoring
 /en-US/docs/Mozilla_MathML_Project/Authoring_MathML	/en-US/docs/Web/MathML/Guides/Authoring
 /en-US/docs/Mozilla_event_reference	/en-US/docs/Web/API/Document_Object_Model/Events
@@ -11906,7 +11906,7 @@
 /en-US/docs/Web/CSS/-moz-border-image-slice	/en-US/docs/Web/CSS/border-image-slice
 /en-US/docs/Web/CSS/-moz-border-image-source	/en-US/docs/Web/CSS/border-image-source
 /en-US/docs/Web/CSS/-moz-border-image-width	/en-US/docs/Web/CSS/border-image-width
-/en-US/docs/Web/CSS/-moz-border-left-colors	/en-US/docs/Web/CSS/Mozilla_Extensions#b
+/en-US/docs/Web/CSS/-moz-border-left-colors	/en-US/docs/Web/CSS/Reference/Mozilla_extensions#b
 /en-US/docs/Web/CSS/-moz-border-radius	/en-US/docs/Web/CSS/border-radius
 /en-US/docs/Web/CSS/-moz-border-radius-bottomleft	/en-US/docs/Web/CSS/border-bottom-left-radius
 /en-US/docs/Web/CSS/-moz-border-radius-bottomright	/en-US/docs/Web/CSS/border-bottom-right-radius
@@ -12241,8 +12241,8 @@
 /en-US/docs/Web/CSS/CSS_Positioning/Understanding_z_index/Using_z-index	/en-US/docs/Web/CSS/CSS_positioned_layout/Using_z-index
 /en-US/docs/Web/CSS/CSS_Properties_Reference	/en-US/docs/Web/CSS/Reference#index
 /en-US/docs/Web/CSS/CSS_Reference	/en-US/docs/Web/CSS/Reference
-/en-US/docs/Web/CSS/CSS_Reference/Mozilla_Extensions	/en-US/docs/Web/CSS/Mozilla_Extensions
-/en-US/docs/Web/CSS/CSS_Reference/Webkit_Extensions	/en-US/docs/Web/CSS/WebKit_Extensions
+/en-US/docs/Web/CSS/CSS_Reference/Mozilla_Extensions	/en-US/docs/Web/CSS/Reference/Mozilla_extensions
+/en-US/docs/Web/CSS/CSS_Reference/Webkit_Extensions	/en-US/docs/Web/CSS/Reference/Webkit_extensions
 /en-US/docs/Web/CSS/CSS_Scroll_Snap/Browser_compat	/en-US/docs/Web/CSS/CSS_scroll_snap
 /en-US/docs/Web/CSS/CSS_Scroll_Snap/compat	/en-US/docs/Web/CSS/CSS_scroll_snap
 /en-US/docs/Web/CSS/CSS_Scroll_Snap_Points	/en-US/docs/Web/CSS/CSS_scroll_snap
@@ -12307,7 +12307,7 @@
 /en-US/docs/Web/CSS/Containing_block	/en-US/docs/Web/CSS/CSS_display/Containing_block
 /en-US/docs/Web/CSS/Currentcolor	/en-US/docs/Web/CSS/color_value#currentcolor_keyword
 /en-US/docs/Web/CSS/Descendant_selectors	/en-US/docs/Web/CSS/Descendant_combinator
-/en-US/docs/Web/CSS/Draft_Implementations_of_CSS_Features	/en-US/docs/Web/CSS/Mozilla_Extensions
+/en-US/docs/Web/CSS/Draft_Implementations_of_CSS_Features	/en-US/docs/Web/CSS/Reference/Mozilla_extensions
 /en-US/docs/Web/CSS/FAQ	/en-US/docs/Web/CSS
 /en-US/docs/Web/CSS/Filter_Effects	/en-US/docs/Web/CSS/CSS_filter_effects
 /en-US/docs/Web/CSS/Filter_Effects/Using_filter_effects	/en-US/docs/Web/CSS/CSS_filter_effects/Using_filter_effects
@@ -12327,11 +12327,10 @@
 /en-US/docs/Web/CSS/Media_Queries/Using_media_queries	/en-US/docs/Web/CSS/CSS_media_queries/Using_media_queries
 /en-US/docs/Web/CSS/Media_Queries/Using_media_queries_for_accessibility	/en-US/docs/Web/CSS/CSS_media_queries/Using_media_queries_for_accessibility
 /en-US/docs/Web/CSS/Motion_Path	/en-US/docs/Web/CSS/CSS_motion_path
+/en-US/docs/Web/CSS/Mozilla_Extensions	/en-US/docs/Web/CSS/Reference/Mozilla_extensions
 /en-US/docs/Web/CSS/Other_Resources	/en-US/docs/Web/CSS
 /en-US/docs/Web/CSS/Paged_Media	/en-US/docs/Web/CSS/CSS_paged_media
 /en-US/docs/Web/CSS/Privacy_and_the_:visited_selector	/en-US/docs/Web/CSS/CSS_selectors/Privacy_and_the_visited_selector
-/en-US/docs/Web/CSS/Reference/Mozilla_Extensions	/en-US/docs/Web/CSS/Mozilla_Extensions
-/en-US/docs/Web/CSS/Reference/Webkit_Extensions	/en-US/docs/Web/CSS/WebKit_Extensions
 /en-US/docs/Web/CSS/Reference/object-position	/en-US/docs/Web/CSS/object-position
 /en-US/docs/Web/CSS/Replaced_element	/en-US/docs/Web/CSS/CSS_images/Replaced_element_properties
 /en-US/docs/Web/CSS/Scaling_of_SVG_backgrounds	/en-US/docs/Web/CSS/CSS_backgrounds_and_borders/Scaling_of_SVG_backgrounds
@@ -12363,6 +12362,7 @@
 /en-US/docs/Web/CSS/Value_definition_syntax	/en-US/docs/Web/CSS/CSS_values_and_units/Value_definition_syntax
 /en-US/docs/Web/CSS/Viewport_concepts	/en-US/docs/Web/CSS/CSSOM_view/Viewport_concepts
 /en-US/docs/Web/CSS/Visual_formatting_model	/en-US/docs/Web/CSS/CSS_display/Visual_formatting_model
+/en-US/docs/Web/CSS/WebKit_Extensions	/en-US/docs/Web/CSS/Reference/Webkit_extensions
 /en-US/docs/Web/CSS/_image	/en-US/docs/Web/CSS/image/image
 /en-US/docs/Web/CSS/abs()	/en-US/docs/Web/CSS/abs
 /en-US/docs/Web/CSS/actual_value	/en-US/docs/Web/CSS/CSS_cascade/Value_processing#actual_value

files/en-us/_wikihistory.json

@@ -77630,69 +77630,6 @@
     "modified": "2020-10-15T22:08:03.870Z",
     "contributors": ["wbamberg", "chrisdavidmills", "rachelandrew"]
   },
-  "Web/CSS/Mozilla_Extensions": {
-    "modified": "2020-08-09T13:09:17.030Z",
-    "contributors": [
-      "jswisher",
-      "wbamberg",
-      "Koavf",
-      "ExE-Boss",
-      "mfuji09",
-      "chrisdavidmills",
-      "mfluehr",
-      "sfoster",
-      "Sebastianz",
-      "HTMLValidator",
-      "Prinz_Rana",
-      "teoli",
-      "yisibl",
-      "SJW",
-      "y0ssar1an",
-      "fscholz",
-      "frankyan",
-      "Paul",
-      "Sheppy",
-      "ethertank",
-      "mkato",
-      "DBaron",
-      "tregagnon",
-      "Marcoos",
-      "Mook(as)",
-      "Jürgen Jeka",
-      "Sevenspade",
-      "mozjonathan",
-      "BijuGC",
-      "Ms2ger",
-      "Level",
-      "Taken",
-      "SamB",
-      "Drhowarddrfine",
-      "j.j.",
-      "MarkusStange",
-      "Marsf",
-      "Yanmorin",
-      "Tonymec",
-      "Wjjohnst",
-      "Turicon",
-      "Dao",
-      "Kliu0x52",
-      "Piro",
-      "Mgjbot",
-      "Nathymig",
-      "Efriedman",
-      "Nickolay",
-      "Jesse",
-      "BenoitL",
-      "Korisu",
-      "Pumbaa80",
-      "Ptak82",
-      "Dria",
-      "Enn",
-      "Phreed",
-      "Jchernandez",
-      "GT"
-    ]
-  },
   "Web/CSS/Next-sibling_combinator": {
     "modified": "2020-10-15T21:03:44.777Z",
     "contributors": [
@@ -77879,6 +77816,95 @@
       "Dria"
     ]
   },
+  "Web/CSS/Reference/Mozilla_extensions": {
+    "modified": "2020-08-09T13:09:17.030Z",
+    "contributors": [
+      "jswisher",
+      "wbamberg",
+      "Koavf",
+      "ExE-Boss",
+      "mfuji09",
+      "chrisdavidmills",
+      "mfluehr",
+      "sfoster",
+      "Sebastianz",
+      "HTMLValidator",
+      "Prinz_Rana",
+      "teoli",
+      "yisibl",
+      "SJW",
+      "y0ssar1an",
+      "fscholz",
+      "frankyan",
+      "Paul",
+      "Sheppy",
+      "ethertank",
+      "mkato",
+      "DBaron",
+      "tregagnon",
+      "Marcoos",
+      "Mook(as)",
+      "Jürgen Jeka",
+      "Sevenspade",
+      "mozjonathan",
+      "BijuGC",
+      "Ms2ger",
+      "Level",
+      "Taken",
+      "SamB",
+      "Drhowarddrfine",
+      "j.j.",
+      "MarkusStange",
+      "Marsf",
+      "Yanmorin",
+      "Tonymec",
+      "Wjjohnst",
+      "Turicon",
+      "Dao",
+      "Kliu0x52",
+      "Piro",
+      "Mgjbot",
+      "Nathymig",
+      "Efriedman",
+      "Nickolay",
+      "Jesse",
+      "BenoitL",
+      "Korisu",
+      "Pumbaa80",
+      "Ptak82",
+      "Dria",
+      "Enn",
+      "Phreed",
+      "Jchernandez",
+      "GT"
+    ]
+  },
+  "Web/CSS/Reference/Webkit_extensions": {
+    "modified": "2020-10-05T04:22:03.202Z",
+    "contributors": [
+      "rachelandrew",
+      "wbamberg",
+      "Malvoz",
+      "estelle",
+      "mfluehr",
+      "ExE-Boss",
+      "Sheppy",
+      "mfuji09",
+      "upsuper",
+      "tobias47n9e",
+      "Sebastianz",
+      "teoli",
+      "yisibl",
+      "teo1978",
+      "y0ssar1an",
+      "abdullahasseiri",
+      "aneesh.mb",
+      "Rob W",
+      "Jeremie",
+      "Inkbug",
+      "ziyunfei"
+    ]
+  },
   "Web/CSS/Selector_list": {
     "modified": "2020-10-15T22:23:36.353Z",
     "contributors": [
@@ -78017,32 +78043,6 @@
       "Dholbert"
     ]
   },
-  "Web/CSS/WebKit_Extensions": {
-    "modified": "2020-10-05T04:22:03.202Z",
-    "contributors": [
-      "rachelandrew",
-      "wbamberg",
-      "Malvoz",
-      "estelle",
-      "mfluehr",
-      "ExE-Boss",
-      "Sheppy",
-      "mfuji09",
-      "upsuper",
-      "tobias47n9e",
-      "Sebastianz",
-      "teoli",
-      "yisibl",
-      "teo1978",
-      "y0ssar1an",
-      "abdullahasseiri",
-      "aneesh.mb",
-      "Rob W",
-      "Jeremie",
-      "Inkbug",
-      "ziyunfei"
-    ]
-  },
   "Web/CSS/align-content": {
     "modified": "2020-12-02T11:02:36.210Z",
     "contributors": [

files/en-us/glossary/vendor_prefix/index.md

@@ -77,6 +77,6 @@ requestAnimationFrame(callback);
 
 ## See also
 
-- [`-moz-` vendor-prefixed CSS extensions](/en-US/docs/Web/CSS/Mozilla_Extensions)
-- [`-webkit-` vendor-prefixed CSS extensions](/en-US/docs/Web/CSS/WebKit_Extensions)
+- [`-moz-` vendor-prefixed CSS extensions](/en-US/docs/Web/CSS/Reference/Mozilla_extensions)
+- [`-webkit-` vendor-prefixed CSS extensions](/en-US/docs/Web/CSS/Reference/Webkit_extensions)
 - [Browser prefixes](https://en.wikipedia.org/wiki/CSS_hack#Browser_prefixes) on Wikipedia

files/en-us/glossary/webkit/index.md

@@ -14,4 +14,4 @@ WebKit is an Apple trademark, and the framework is distributed under a BSD-form
 ## See also
 
 - [WebKit](https://en.wikipedia.org/wiki/WebKit) on Wikipedia
-- [WebKit CSS extensions](/en-US/docs/Web/CSS/WebKit_Extensions)
+- [WebKit CSS extensions](/en-US/docs/Web/CSS/Reference/Webkit_extensions)

files/en-us/learn_web_development/howto/solve_css_problems/css_faq/index.md

@@ -266,7 +266,7 @@ border-block-end-color: navy;
 ```
 
 > [!NOTE]
-> See the [Mozilla CSS Extensions](/en-US/docs/Web/CSS/Mozilla_Extensions) and [WebKit CSS Extensions](/en-US/docs/Web/CSS/WebKit_Extensions) for lists of browser-prefixed CSS properties.
+> See the [Mozilla CSS Extensions](/en-US/docs/Web/CSS/Reference/Mozilla_extensions) and [WebKit CSS Extensions](/en-US/docs/Web/CSS/Reference/Webkit_extensions) for lists of browser-prefixed CSS properties.
 
 ## How does z-index relate to positioning?
 

files/en-us/mozilla/firefox/releases/145/index.md

@@ -36,7 +36,7 @@ Firefox 145 is the current [Beta version of Firefox](https://www.firefox.com/en-
 
 - The {{cssxref("text-autospace")}} property is now supported, allowing automatic spacing adjustments between characters from different scripts ([Firefox bug 1981086](https://bugzil.la/1981086), [Firefox bug 1869577](https://bugzil.la/1869577)).
 
-- The legacy [`-webkit-fill-available`](/en-US/docs/Web/CSS/WebKit_Extensions#-webkit-prefixed_property_values) keyword is now supported as a value for the CSS {{cssxref("width")}} and {{cssxref("height")}} properties to improve web compatibility.
+- The legacy [`-webkit-fill-available`](/en-US/docs/Web/CSS/Reference/Webkit_extensions#-webkit-prefixed_property_values) keyword is now supported as a value for the CSS {{cssxref("width")}} and {{cssxref("height")}} properties to improve web compatibility.
   This keyword is an alias for the recently-standardized `stretch` keyword (i.e., [`width: stretch`](/en-US/docs/Web/CSS/width#stretch) and [`height: stretch`](/en-US/docs/Web/CSS/height#stretch)), which isn't yet supported in Firefox.
   ([Firefox bug 1988938](https://bugzil.la/1988938), [Firefox bug 1789477](https://bugzil.la/1789477)).
 

files/en-us/mozilla/firefox/releases/3.6/index.md

@@ -16,7 +16,7 @@ sidebar: firefox
   - : Firefox 3.6 adds support for the proposed `-moz-linear-gradient` and `-moz-radial-gradient` properties for {{Cssxref("background")}}.
 - [Multiple backgrounds](/en-US/docs/Web/CSS/CSS_backgrounds_and_borders/Using_multiple_backgrounds)
   - : The {{cssxref("background")}} property (as well as {{Cssxref("background-color")}}, {{Cssxref("background-image")}}, {{Cssxref("background-position")}}, {{Cssxref("background-repeat")}}, and {{Cssxref("background-attachment")}}) now supports multiple backgrounds. This lets you specify multiple backgrounds that are rendered atop one another in layers.
-- [Mozilla-specific media features](/en-US/docs/Web/CSS/Mozilla_Extensions#media_features)
+- [Mozilla-specific media features](/en-US/docs/Web/CSS/Reference/Mozilla_extensions#media_features)
   - : Media features have been added for Mozilla-specific system metrics, so that [media queries](/en-US/docs/Web/CSS/CSS_media_queries/Using_media_queries) can be used to more safely check on the availability of features such as touch support.
 - [Scaling background images](/en-US/docs/Web/CSS/CSS_backgrounds_and_borders/Resizing_background_images)
   - : The `background-size` property from the [CSS 3 Backgrounds and Borders draft](https://drafts.csswg.org/css-backgrounds-3/) is now supported under the name `-moz-background-size`.

files/en-us/web/css/-moz-image-rect/index.md

@@ -167,5 +167,5 @@ Not part of any standard.
 
 ## See also
 
-- [Mozilla CSS extensions](/en-US/docs/Web/CSS/Mozilla_Extensions)
+- [Mozilla CSS extensions](/en-US/docs/Web/CSS/Reference/Mozilla_extensions)
 - [CSS Backgrounds and Borders module](/en-US/docs/Web/CSS/CSS_backgrounds_and_borders)

files/en-us/web/css/-webkit-tap-highlight-color/index.md

@@ -48,7 +48,7 @@ Not part of any standard. Apple has [a description in the Safari Web Content Gui
 
 ## See also
 
-- [WebKit CSS extensions](/en-US/docs/Web/CSS/WebKit_Extensions)
+- [WebKit CSS extensions](/en-US/docs/Web/CSS/Reference/Webkit_extensions)
 - Related CSS pseudo-classes:
   - [`:hover`](/en-US/docs/Web/CSS/:hover)
   - [`:active`](/en-US/docs/Web/CSS/:active)

files/en-us/web/css/-webkit-text-security/index.md

@@ -66,4 +66,4 @@ Not part of any standard.
 
 ## See also
 
-- [WebKit CSS extensions](/en-US/docs/Web/CSS/WebKit_Extensions)
+- [WebKit CSS extensions](/en-US/docs/Web/CSS/Reference/Webkit_extensions)