meonBot · pull · Apr 20, 2026 · Apr 20, 2026 · Apr 20, 2026 · Apr 20, 2026
diff --git a/files/en-us/mozilla/firefox/releases/150/index.md b/files/en-us/mozilla/firefox/releases/150/index.md
@@ -20,6 +20,7 @@ Firefox 150 is the current [Beta version of Firefox](https://www.firefox.com/en-
 
 - A specific message is now displayed in the [_Response tab_ of the Network pane](https://firefox-source-docs.mozilla.org/devtools-user/network_monitor/request_details/index.html#response-tab) to indicate why there is no response data when a request has been redirected.
   ([Firefox bug 2016679](https://bugzil.la/2016679)).
+- A new "Element-specific pseudo-classes" section has been added to the [pseudo-class toggle pane](https://firefox-source-docs.mozilla.org/devtools-user/page_inspector/how_to/examine_and_edit_css/index.html#viewing-common-pseudo-classes), including a toggle for the {{cssxref(":open")}} pseudo-class, which is only available for elements that have an open state like `<dialog>` elements. The existing toggle for the {{cssxref(":visited")}} pseudo-class was also moved there, as it only applies to `<a>` and `<area>` elements. ([Firefox bug 2014442](https://bugzil.la/2014442)).
 
 ### HTML
 

diff --git a/files/en-us/web/css/reference/values/data_types/index.md b/files/en-us/web/css/reference/values/data_types/index.md
@@ -33,6 +33,8 @@ These types include keywords and identifiers as well as strings, and URLs.
       - : Rolls back the cascade to the value of the earlier origin.
     - {{CSSXref("revert-layer")}}
       - : Rolls back the cascade to the value of the earlier [cascade layer](/en-US/docs/Web/CSS/Reference/At-rules/@layer).
+    - {{CSSXref("revert-rule")}}
+      - : Rolls back the cascade to the value of an earlier matching style rule.
     - {{CSSXref("unset")}}
       - : Acts as `inherit` or `initial` depending on whether the property is inherited or not.
 - {{cssxref("&lt;custom-ident&gt;")}}

diff --git a/files/en-us/web/css/reference/values/inherit/index.md b/files/en-us/web/css/reference/values/inherit/index.md
@@ -160,5 +160,5 @@ The `<h2>` elements are all `green`. However, if they are nested in a {{htmlelem
 
 ## See also
 
-- {{cssxref("initial")}}, {{cssxref("revert")}}, {{cssxref("revert-layer")}}, and {{cssxref("unset")}} keywords
+- {{cssxref("initial")}}, {{cssxref("revert")}}, {{cssxref("revert-layer")}}, {{cssxref("revert-rule")}}, and {{cssxref("unset")}} keywords
 - [Inheritance](/en-US/docs/Web/CSS/Guides/Cascade/Inheritance)
diff --git a/files/en-us/web/css/reference/values/initial/index.md b/files/en-us/web/css/reference/values/initial/index.md
@@ -9,7 +9,7 @@ sidebar: cssref
 
 The **`initial`** [CSS](/en-US/docs/Web/CSS) keyword applies the [initial (or default) value](/en-US/docs/Web/CSS/Guides/Cascade/Property_value_processing#initial_value) of a property to an element. It can be applied to any CSS property, including the CSS shorthand property {{cssxref("all")}}. With `all` set to `initial`, all CSS properties can be restored to their respective initial values in one go instead of restoring each one separately.
 
-On [inherited properties](/en-US/docs/Web/CSS/Guides/Cascade/Inheritance#inherited_properties), the initial value may be unexpected. You should consider using the {{cssxref("inherit")}}, {{cssxref("unset")}}, {{cssxref("revert")}}, or {{cssxref("revert-layer")}} keywords instead.
+On [inherited properties](/en-US/docs/Web/CSS/Guides/Cascade/Inheritance#inherited_properties), the initial value may be unexpected. You should consider using the {{cssxref("inherit")}}, {{cssxref("unset")}}, {{cssxref("revert")}}, {{cssxref("revert-layer")}}, or {{cssxref("revert-rule")}} keywords instead.
 
 ## Examples
 
@@ -62,6 +62,6 @@ With the `initial` keyword in this example, the `color` and `font-size` values o
 
 ## See also
 
-- {{cssxref("inherit")}}, {{cssxref("revert")}}, {{cssxref("revert-layer")}}, and {{cssxref("unset")}} keywords
+- {{cssxref("inherit")}}, {{cssxref("revert")}}, {{cssxref("revert-layer")}}, {{cssxref("revert-rule")}}, and {{cssxref("unset")}} keywords
 - {{cssxref("all")}}
 - [Inheritance](/en-US/docs/Web/CSS/Guides/Cascade/Inheritance)
diff --git a/files/en-us/web/css/reference/values/revert-layer/index.md b/files/en-us/web/css/reference/values/revert-layer/index.md
@@ -155,6 +155,7 @@ The style for all `<li>` elements rolls back to the defaults in the user-agent o
 - {{cssxref("initial")}}
 - {{cssxref("inherit")}}
 - {{cssxref("revert")}}
+- {{cssxref("revert-rule")}}
 - {{cssxref("unset")}}
 - {{cssxref("all")}}
 - [CSS cascading and inheritance](/en-US/docs/Web/CSS/Guides/Cascade) module
diff --git a/files/en-us/web/css/reference/values/revert-rule/index.md b/files/en-us/web/css/reference/values/revert-rule/index.md
@@ -0,0 +1,175 @@
+---
+title: revert-rule
+slug: Web/CSS/Reference/Values/revert-rule
+page-type: css-keyword
+browser-compat: css.types.global_keywords.revert-rule
+sidebar: cssref
+---
+
+The **`revert-rule`** [CSS-wide keyword](/en-US/docs/Web/CSS/Reference/Values/Data_types#css-wide_keywords) rolls back the cascaded value of a property to the value it would have had if the current [style rule](/en-US/docs/Web/CSS/Syntax#css_rulesets) had not been present. The cascade then determines the value from the remaining declarations — this could be another rule in the same [cascade layer](/en-US/docs/Web/CSS/Reference/At-rules/@layer), a rule in a different layer, a different [style origin](/en-US/docs/Glossary/Style_origin), or a [default value](/en-US/docs/Web/CSS/Guides/Cascade/Property_value_processing#defaulting) (`inherited` or `initial`).
+
+When used inside a [CSS animation](/en-US/docs/Web/CSS/CSS_animations) (the animation origin), the `revert-rule` keyword behaves like {{cssxref("revert-layer")}}.
+
+This keyword can be applied to any CSS property, including the CSS shorthand property {{cssxref("all")}}.
+
+## Revert-rule vs. revert-layer vs. revert
+
+The `revert-rule`, {{cssxref("revert-layer")}}, and {{cssxref("revert")}} keywords each roll back the cascade, but at different levels of granularity:
+
+- {{cssxref("revert")}} removes all declarations from the current [style origin](/en-US/docs/Glossary/Style_origin), rolling back to the previous origin (for example, from author styles to user-agent styles).
+- {{cssxref("revert-layer")}} removes all declarations from the current [cascade layer](/en-US/docs/Web/CSS/Reference/At-rules/@layer), rolling back to the previous layer within the same origin.
+- `revert-rule` removes only the declarations from the current style rule. Other rules in the same cascade layer still apply.
+
+This makes `revert-rule` useful for conditionally ignoring specific declarations within a rule while still respecting declarations from other rules in the same layer.
+
+## Examples
+
+### Rolling back to the previous rule
+
+In this example, two rules target the same element. The second rule uses `revert-rule` on the `color` property, which causes the cascade to determine the value as if the `p.special` rule were not present, falling back to the value established by the first rule.
+
+#### HTML
+
+```html
+<p class="special">This paragraph has special styling.</p>
+```
+
+#### CSS
+
+```css hidden
+body {
+  font-family: system-ui;
+}
+
+@supports not (color: revert-rule) {
+  body::before {
+    content: "Your browser doesn't support the revert-rule keyword yet.";
+    background-color: wheat;
+    display: block;
+    text-align: center;
+    padding: 1em;
+  }
+}
+```
+
+```css
+p {
+  color: blue;
+  font-weight: bold;
+}
+
+p.special {
+  color: revert-rule;
+  border: 1px solid currentcolor;
+}
+```
+
+#### Result
+
+{{EmbedLiveSample('Rolling back to the previous rule', '100%', 120)}}
+
+The paragraph text is blue from the `p` rule because `color: revert-rule` causes the `color` declaration in `p.special` to be ignored. The `font-weight` and `border` declarations are unaffected.
+
+### Reverting from a style attribute
+
+When `revert-rule` is used in a [style attribute](/en-US/docs/Web/HTML/Reference/Global_attributes/style), it causes the cascade to act as if the style attribute were not present. This works because the style attribute is treated as its own style rule.
+
+#### HTML
+
+```html
+<p style="color: revert-rule">This text uses the stylesheet color.</p>
+```
+
+#### CSS
+
+```css hidden
+body {
+  font-family: system-ui;
+}
+
+@supports not (color: revert-rule) {
+  body::before {
+    content: "Your browser doesn't support the revert-rule keyword yet.";
+    background-color: wheat;
+    display: block;
+    text-align: center;
+    padding: 1em;
+  }
+}
+```
+
+```css
+p {
+  color: green;
+}
+```
+
+#### Result
+
+{{EmbedLiveSample('Reverting from a style attribute', '100%', 120)}}
+
+The paragraph text is green because `revert-rule` causes the cascade to ignore the style attribute's declaration, and the `p` rule takes effect.
+
+### Chaining multiple `revert-rule` values
+
+If multiple rules use `revert-rule` for the same property, the cascade ignores each of them in turn, continuing back through earlier rules until it finds a concrete value.
+
+#### HTML
+
+```html
+<p class="a b">This text is styled by a chain of revert-rule values.</p>
+```
+
+#### CSS
+
+```css hidden
+body {
+  font-family: system-ui;
+}
+
+@supports not (color: revert-rule) {
+  body::before {
+    content: "Your browser doesn't support the revert-rule keyword yet.";
+    background-color: wheat;
+    display: block;
+    text-align: center;
+    padding: 1em;
+  }
+}
+```
+
+```css
+p {
+  color: red;
+}
+p.a {
+  color: revert-rule;
+}
+p.b {
+  color: revert-rule;
+}
+```
+
+#### Result
+
+{{EmbedLiveSample('Chaining multiple revert-rule values', '100%', 120)}}
+
+Both the `p.b` and `p.a` rules are ignored by `revert-rule`. The cascade falls through to the `p` rule, so the text is red.
+
+## Specifications
+
+{{Specifications}}
+
+## Browser compatibility
+
+{{Compat}}
+
+## See also
+
+- {{cssxref("initial")}}
+- {{cssxref("inherit")}}
+- {{cssxref("revert")}}
+- {{cssxref("revert-layer")}}
+- {{cssxref("unset")}}
+- {{cssxref("all")}}
+- [CSS cascading and inheritance](/en-US/docs/Web/CSS/Guides/Cascade) module
diff --git a/files/en-us/web/css/reference/values/revert/index.md b/files/en-us/web/css/reference/values/revert/index.md
@@ -158,5 +158,6 @@ Also, if neither the user agent nor the user override the `<h3>` or `<section>`
 - Use the {{cssxref("initial")}} keyword to set a property to its initial value.
 - Use the {{cssxref("inherit")}} keyword to make an element's property the same as its parent.
 - Use the {{cssxref("revert-layer")}} keyword to reset a property to the value established in a previous cascade layer.
+- Use the {{cssxref("revert-rule")}} keyword to reset a property to the value of an earlier matching style rule.
 - Use the {{cssxref("unset")}} keyword to set a property to its inherited value if it inherits or to its initial value if not.
 - The {{cssxref("all")}} property lets you reset all properties to their initial, inherited, reverted, or unset state at once.
diff --git a/files/en-us/web/css/reference/values/unset/index.md b/files/en-us/web/css/reference/values/unset/index.md
@@ -103,4 +103,5 @@ p {
 - Use the {{cssxref("inherit")}} keyword to make an element's property the same as its parent.
 - Use the {{cssxref("revert")}} keyword to reset a property to the value established by the user-agent stylesheet (or by user styles, if any exist).
 - Use the {{cssxref("revert-layer")}} keyword to reset a property to the value established in a previous cascade layer.
+- Use the {{cssxref("revert-rule")}} keyword to reset a property to the value of an earlier matching style rule.
 - The {{cssxref("all")}} property lets you reset all properties to their initial, inherited, reverted, or unset state at once.
diff --git a/files/en-us/web/html/reference/attributes/accept/index.md b/files/en-us/web/html/reference/attributes/accept/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: accept"
+title: "`accept` HTML attribute"
 short-title: accept
 slug: Web/HTML/Reference/Attributes/accept
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/autocomplete/index.md b/files/en-us/web/html/reference/attributes/autocomplete/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: autocomplete"
+title: "`autocomplete` HTML attribute"
 short-title: autocomplete
 slug: Web/HTML/Reference/Attributes/autocomplete
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/capture/index.md b/files/en-us/web/html/reference/attributes/capture/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: capture"
+title: "`capture` HTML attribute"
 short-title: capture
 slug: Web/HTML/Reference/Attributes/capture
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/content/index.md b/files/en-us/web/html/reference/attributes/content/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: content"
+title: "`content` HTML attribute"
 short-title: content
 slug: Web/HTML/Reference/Attributes/content
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/crossorigin/index.md b/files/en-us/web/html/reference/attributes/crossorigin/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: crossorigin"
+title: "`crossorigin` HTML attribute"
 short-title: crossorigin
 slug: Web/HTML/Reference/Attributes/crossorigin
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/dirname/index.md b/files/en-us/web/html/reference/attributes/dirname/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: dirname"
+title: "`dirname` HTML attribute"
 short-title: dirname
 slug: Web/HTML/Reference/Attributes/dirname
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/disabled/index.md b/files/en-us/web/html/reference/attributes/disabled/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: disabled"
+title: "`disabled` HTML attribute"
 short-title: disabled
 slug: Web/HTML/Reference/Attributes/disabled
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/elementtiming/index.md b/files/en-us/web/html/reference/attributes/elementtiming/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: elementtiming"
+title: "`elementtiming` HTML attribute"
 short-title: elementtiming
 slug: Web/HTML/Reference/Attributes/elementtiming
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/fetchpriority/index.md b/files/en-us/web/html/reference/attributes/fetchpriority/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: fetchpriority"
+title: "`fetchpriority` HTML attribute"
 short-title: fetchpriority
 slug: Web/HTML/Reference/Attributes/fetchpriority
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/for/index.md b/files/en-us/web/html/reference/attributes/for/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: for"
+title: "`for` HTML attribute"
 short-title: for
 slug: Web/HTML/Reference/Attributes/for
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/form/index.md b/files/en-us/web/html/reference/attributes/form/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: form"
+title: "`form` HTML attribute"
 short-title: form
 slug: Web/HTML/Reference/Attributes/form
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/integrity/index.md b/files/en-us/web/html/reference/attributes/integrity/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: integrity"
+title: "`integrity` HTML attribute"
 short-title: integrity
 slug: Web/HTML/Reference/Attributes/integrity
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/max/index.md b/files/en-us/web/html/reference/attributes/max/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: max"
+title: "`max` HTML attribute"
 short-title: max
 slug: Web/HTML/Reference/Attributes/max
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/maxlength/index.md b/files/en-us/web/html/reference/attributes/maxlength/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: maxlength"
+title: "`maxlength` HTML attribute"
 short-title: maxlength
 slug: Web/HTML/Reference/Attributes/maxlength
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/min/index.md b/files/en-us/web/html/reference/attributes/min/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: min"
+title: "`min` HTML attribute"
 short-title: min
 slug: Web/HTML/Reference/Attributes/min
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/minlength/index.md b/files/en-us/web/html/reference/attributes/minlength/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: minlength"
+title: "`minlength` HTML attribute"
 short-title: minlength
 slug: Web/HTML/Reference/Attributes/minlength
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/multiple/index.md b/files/en-us/web/html/reference/attributes/multiple/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: multiple"
+title: "`multiple` HTML attribute"
 short-title: multiple
 slug: Web/HTML/Reference/Attributes/multiple
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/pattern/index.md b/files/en-us/web/html/reference/attributes/pattern/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: pattern"
+title: "`pattern` HTML attribute"
 short-title: pattern
 slug: Web/HTML/Reference/Attributes/pattern
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/placeholder/index.md b/files/en-us/web/html/reference/attributes/placeholder/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: placeholder"
+title: "`placeholder` HTML attribute"
 short-title: placeholder
 slug: Web/HTML/Reference/Attributes/placeholder
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/readonly/index.md b/files/en-us/web/html/reference/attributes/readonly/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: readonly"
+title: "`readonly` HTML attribute"
 short-title: readonly
 slug: Web/HTML/Reference/Attributes/readonly
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/rel/index.md b/files/en-us/web/html/reference/attributes/rel/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: rel"
+title: "`rel` HTML attribute"
 short-title: rel
 slug: Web/HTML/Reference/Attributes/rel
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/required/index.md b/files/en-us/web/html/reference/attributes/required/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: required"
+title: "`required` HTML attribute"
 short-title: required
 slug: Web/HTML/Reference/Attributes/required
 page-type: html-attribute

diff --git a/files/en-us/web/html/reference/attributes/size/index.md b/files/en-us/web/html/reference/attributes/size/index.md
@@ -1,5 +1,5 @@
 ---
-title: "HTML attribute: size"
+title: "`size` HTML attribute"
 short-title: size
 slug: Web/HTML/Reference/Attributes/size
 page-type: html-attribute