diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index dd0ed73a0b..eb495c7657 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -50,7 +50,7 @@ set(SOURCES
     CSS/Parser/DeclarationOrAtRule.cpp
     CSS/Parser/Function.cpp
     CSS/Parser/Parser.cpp
-    CSS/Parser/StyleRule.cpp
+    CSS/Parser/Rule.cpp
     CSS/Parser/Token.cpp
     CSS/Parser/Tokenizer.cpp
     CSS/Percentage.cpp
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/DeclarationOrAtRule.cpp b/Userland/Libraries/LibWeb/CSS/Parser/DeclarationOrAtRule.cpp
index 24ba37d5ac..6c3566bec0 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/DeclarationOrAtRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/DeclarationOrAtRule.cpp
@@ -9,7 +9,7 @@
 
 namespace Web::CSS::Parser {
 
-DeclarationOrAtRule::DeclarationOrAtRule(RefPtr<StyleRule> at)
+DeclarationOrAtRule::DeclarationOrAtRule(RefPtr<Rule> at)
     : m_type(DeclarationType::At)
     , m_at(move(at))
 {
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/DeclarationOrAtRule.h b/Userland/Libraries/LibWeb/CSS/Parser/DeclarationOrAtRule.h
index e8b8f67a84..e5a35f8bb1 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/DeclarationOrAtRule.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/DeclarationOrAtRule.h
@@ -7,13 +7,13 @@
 #pragma once
 
 #include <LibWeb/CSS/Parser/Declaration.h>
-#include <LibWeb/CSS/Parser/StyleRule.h>
+#include <LibWeb/CSS/Parser/Rule.h>
 
 namespace Web::CSS::Parser {
 
 class DeclarationOrAtRule {
 public:
-    explicit DeclarationOrAtRule(RefPtr<StyleRule> at);
+    explicit DeclarationOrAtRule(RefPtr<Rule> at);
     explicit DeclarationOrAtRule(Declaration declaration);
     ~DeclarationOrAtRule();
 
@@ -25,7 +25,7 @@ public:
     bool is_at_rule() const { return m_type == DeclarationType::At; }
     bool is_declaration() const { return m_type == DeclarationType::Declaration; }
 
-    StyleRule const& at_rule() const
+    Rule const& at_rule() const
     {
         VERIFY(is_at_rule());
         return *m_at;
@@ -41,7 +41,7 @@ public:
 
 private:
     DeclarationType m_type;
-    RefPtr<StyleRule> m_at;
+    RefPtr<Rule> m_at;
     Optional<Declaration> m_declaration;
 };
 
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index ed19694494..d714e559b4 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -24,7 +24,7 @@
 #include <LibWeb/CSS/Parser/DeclarationOrAtRule.h>
 #include <LibWeb/CSS/Parser/Function.h>
 #include <LibWeb/CSS/Parser/Parser.h>
-#include <LibWeb/CSS/Parser/StyleRule.h>
+#include <LibWeb/CSS/Parser/Rule.h>
 #include <LibWeb/CSS/Selector.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/Dump.h>
@@ -1520,12 +1520,12 @@ Optional<GeneralEnclosed> Parser::parse_general_enclosed(TokenStream<ComponentVa
 // 5.4.1. Consume a list of rules
 // https://www.w3.org/TR/css-syntax-3/#consume-list-of-rules
 template<typename T>
-NonnullRefPtrVector<StyleRule> Parser::consume_a_list_of_rules(TokenStream<T>& tokens, TopLevel top_level)
+NonnullRefPtrVector<Rule> Parser::consume_a_list_of_rules(TokenStream<T>& tokens, TopLevel top_level)
 {
     // To consume a list of rules, given a top-level flag:
 
     // Create an initially empty list of rules.
-    NonnullRefPtrVector<StyleRule> rules;
+    NonnullRefPtrVector<Rule> rules;
 
     // Repeatedly consume the next input token:
     for (;;) {
@@ -1588,7 +1588,7 @@ NonnullRefPtrVector<StyleRule> Parser::consume_a_list_of_rules(TokenStream<T>& t
 // 5.4.2. Consume an at-rule
 // https://www.w3.org/TR/css-syntax-3/#consume-at-rule
 template<typename T>
-NonnullRefPtr<StyleRule> Parser::consume_an_at_rule(TokenStream<T>& tokens)
+NonnullRefPtr<Rule> Parser::consume_an_at_rule(TokenStream<T>& tokens)
 {
     // To consume an at-rule:
 
@@ -1597,7 +1597,7 @@ NonnullRefPtr<StyleRule> Parser::consume_an_at_rule(TokenStream<T>& tokens)
     VERIFY(name_ident.is(Token::Type::AtKeyword));
 
     // Create a new at-rule with its name set to the value of the current input token, its prelude initially set to an empty list, and its value initially set to nothing.
-    // NOTE: We create the StyleRule fully initialized when we return it instead.
+    // NOTE: We create the Rule fully initialized when we return it instead.
     FlyString at_rule_name = ((Token)name_ident).at_keyword();
     Vector<ComponentValue> prelude;
     RefPtr<Block> block;
@@ -1609,21 +1609,21 @@ NonnullRefPtr<StyleRule> Parser::consume_an_at_rule(TokenStream<T>& tokens)
         // <semicolon-token>
         if (token.is(Token::Type::Semicolon)) {
             // Return the at-rule.
-            return StyleRule::make_at_rule(move(at_rule_name), move(prelude), move(block));
+            return Rule::make_at_rule(move(at_rule_name), move(prelude), move(block));
         }
 
         // <EOF-token>
         if (token.is(Token::Type::EndOfFile)) {
             // This is a parse error. Return the at-rule.
             log_parse_error();
-            return StyleRule::make_at_rule(move(at_rule_name), move(prelude), move(block));
+            return Rule::make_at_rule(move(at_rule_name), move(prelude), move(block));
         }
 
         // <{-token>
         if (token.is(Token::Type::OpenCurly)) {
             // Consume a simple block and assign it to the at-rule’s block. Return the at-rule.
             block = consume_a_simple_block(tokens);
-            return StyleRule::make_at_rule(move(at_rule_name), move(prelude), move(block));
+            return Rule::make_at_rule(move(at_rule_name), move(prelude), move(block));
         }
 
         // simple block with an associated token of <{-token>
@@ -1632,7 +1632,7 @@ NonnullRefPtr<StyleRule> Parser::consume_an_at_rule(TokenStream<T>& tokens)
             if (component_value.is_block() && component_value.block().is_curly()) {
                 // Assign the block to the at-rule’s block. Return the at-rule.
                 block = component_value.block();
-                return StyleRule::make_at_rule(move(at_rule_name), move(prelude), move(block));
+                return Rule::make_at_rule(move(at_rule_name), move(prelude), move(block));
             }
         }
 
@@ -1649,12 +1649,12 @@ NonnullRefPtr<StyleRule> Parser::consume_an_at_rule(TokenStream<T>& tokens)
 // 5.4.3. Consume a qualified rule
 // https://www.w3.org/TR/css-syntax-3/#consume-qualified-rule
 template<typename T>
-RefPtr<StyleRule> Parser::consume_a_qualified_rule(TokenStream<T>& tokens)
+RefPtr<Rule> Parser::consume_a_qualified_rule(TokenStream<T>& tokens)
 {
     // To consume a qualified rule:
 
     // Create a new qualified rule with its prelude initially set to an empty list, and its value initially set to nothing.
-    // NOTE: We create the StyleRule fully initialized when we return it instead.
+    // NOTE: We create the Rule fully initialized when we return it instead.
     Vector<ComponentValue> prelude;
     RefPtr<Block> block;
 
@@ -1673,7 +1673,7 @@ RefPtr<StyleRule> Parser::consume_a_qualified_rule(TokenStream<T>& tokens)
         if (token.is(Token::Type::OpenCurly)) {
             // Consume a simple block and assign it to the qualified rule’s block. Return the qualified rule.
             block = consume_a_simple_block(tokens);
-            return StyleRule::make_qualified_rule(move(prelude), move(block));
+            return Rule::make_qualified_rule(move(prelude), move(block));
         }
 
         // simple block with an associated token of <{-token>
@@ -1682,7 +1682,7 @@ RefPtr<StyleRule> Parser::consume_a_qualified_rule(TokenStream<T>& tokens)
             if (component_value.is_block() && component_value.block().is_curly()) {
                 // Assign the block to the qualified rule’s block. Return the qualified rule.
                 block = component_value.block();
-                return StyleRule::make_qualified_rule(move(prelude), move(block));
+                return Rule::make_qualified_rule(move(prelude), move(block));
             }
         }
 
@@ -2112,10 +2112,10 @@ RefPtr<CSSRule> Parser::parse_as_css_rule()
 // 5.3.5. Parse a rule
 // https://www.w3.org/TR/css-syntax-3/#parse-rule
 template<typename T>
-RefPtr<StyleRule> Parser::parse_a_rule(TokenStream<T>& tokens)
+RefPtr<Rule> Parser::parse_a_rule(TokenStream<T>& tokens)
 {
     // To parse a rule from input:
-    RefPtr<StyleRule> rule;
+    RefPtr<Rule> rule;
 
     // 1. Normalize input, and set input to the result.
     // Note: This is done when initializing the Parser.
@@ -2153,7 +2153,7 @@ RefPtr<StyleRule> Parser::parse_a_rule(TokenStream<T>& tokens)
 // 5.3.4. Parse a list of rules
 // https://www.w3.org/TR/css-syntax-3/#parse-list-of-rules
 template<typename T>
-NonnullRefPtrVector<StyleRule> Parser::parse_a_list_of_rules(TokenStream<T>& tokens)
+NonnullRefPtrVector<Rule> Parser::parse_a_list_of_rules(TokenStream<T>& tokens)
 {
     // To parse a list of rules from input:
 
@@ -2373,7 +2373,7 @@ Optional<AK::URL> Parser::parse_url_function(ComponentValue const& component_val
     return {};
 }
 
-RefPtr<CSSRule> Parser::convert_to_rule(NonnullRefPtr<StyleRule> rule)
+RefPtr<CSSRule> Parser::convert_to_rule(NonnullRefPtr<Rule> rule)
 {
     if (rule->is_at_rule()) {
         if (has_ignored_vendor_prefix(rule->at_rule_name())) {
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
index 617105fd1d..f825f39a0c 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
@@ -21,7 +21,7 @@
 #include <LibWeb/CSS/Parser/Declaration.h>
 #include <LibWeb/CSS/Parser/DeclarationOrAtRule.h>
 #include <LibWeb/CSS/Parser/Function.h>
-#include <LibWeb/CSS/Parser/StyleRule.h>
+#include <LibWeb/CSS/Parser/Rule.h>
 #include <LibWeb/CSS/Parser/Tokenizer.h>
 #include <LibWeb/CSS/Ratio.h>
 #include <LibWeb/CSS/Selector.h>
@@ -121,18 +121,18 @@ private:
     // "Parse a stylesheet" is intended to be the normal parser entry point, for parsing stylesheets.
     struct ParsedStyleSheet {
         Optional<AK::URL> location;
-        NonnullRefPtrVector<StyleRule> rules;
+        NonnullRefPtrVector<Rule> rules;
     };
     template<typename T>
     ParsedStyleSheet parse_a_stylesheet(TokenStream<T>&, Optional<AK::URL> location);
 
     // "Parse a list of rules" is intended for the content of at-rules such as @media. It differs from "Parse a stylesheet" in the handling of <CDO-token> and <CDC-token>.
     template<typename T>
-    NonnullRefPtrVector<StyleRule> parse_a_list_of_rules(TokenStream<T>&);
+    NonnullRefPtrVector<Rule> parse_a_list_of_rules(TokenStream<T>&);
 
     // "Parse a rule" is intended for use by the CSSStyleSheet#insertRule method, and similar functions which might exist, which parse text into a single rule.
     template<typename T>
-    RefPtr<StyleRule> parse_a_rule(TokenStream<T>&);
+    RefPtr<Rule> parse_a_rule(TokenStream<T>&);
 
     // "Parse a declaration" is used in @supports conditions. [CSS3-CONDITIONAL]
     template<typename T>
@@ -179,11 +179,11 @@ private:
         Yes
     };
     template<typename T>
-    [[nodiscard]] NonnullRefPtrVector<StyleRule> consume_a_list_of_rules(TokenStream<T>&, TopLevel);
+    [[nodiscard]] NonnullRefPtrVector<Rule> consume_a_list_of_rules(TokenStream<T>&, TopLevel);
     template<typename T>
-    [[nodiscard]] NonnullRefPtr<StyleRule> consume_an_at_rule(TokenStream<T>&);
+    [[nodiscard]] NonnullRefPtr<Rule> consume_an_at_rule(TokenStream<T>&);
     template<typename T>
-    RefPtr<StyleRule> consume_a_qualified_rule(TokenStream<T>&);
+    RefPtr<Rule> consume_a_qualified_rule(TokenStream<T>&);
     template<typename T>
     [[nodiscard]] Vector<DeclarationOrAtRule> consume_a_style_blocks_contents(TokenStream<T>&);
     template<typename T>
@@ -202,7 +202,7 @@ private:
     RefPtr<CSSRule> parse_font_face_rule(TokenStream<ComponentValue>&);
     Vector<FontFace::Source> parse_font_face_src(TokenStream<ComponentValue>&);
 
-    RefPtr<CSSRule> convert_to_rule(NonnullRefPtr<StyleRule>);
+    RefPtr<CSSRule> convert_to_rule(NonnullRefPtr<Rule>);
     RefPtr<PropertyOwningCSSStyleDeclaration> convert_to_style_declaration(Vector<DeclarationOrAtRule> declarations);
     Optional<StyleProperty> convert_to_style_property(Declaration const&);
 
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/StyleRule.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Rule.cpp
similarity index 75%
rename from Userland/Libraries/LibWeb/CSS/Parser/StyleRule.cpp
rename to Userland/Libraries/LibWeb/CSS/Parser/Rule.cpp
index 56c2bd6e58..bffe151eae 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/StyleRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Rule.cpp
@@ -5,12 +5,12 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <LibWeb/CSS/Parser/StyleRule.h>
+#include <LibWeb/CSS/Parser/Rule.h>
 #include <LibWeb/CSS/Serialize.h>
 
 namespace Web::CSS::Parser {
 
-StyleRule::StyleRule(StyleRule::Type type, FlyString name, Vector<ComponentValue> prelude, RefPtr<Block> block)
+Rule::Rule(Rule::Type type, FlyString name, Vector<ComponentValue> prelude, RefPtr<Block> block)
     : m_type(type)
     , m_at_rule_name(move(name))
     , m_prelude(move(prelude))
@@ -18,9 +18,9 @@ StyleRule::StyleRule(StyleRule::Type type, FlyString name, Vector<ComponentValue
 {
 }
 
-StyleRule::~StyleRule() = default;
+Rule::~Rule() = default;
 
-String StyleRule::to_string() const
+String Rule::to_string() const
 {
     StringBuilder builder;
 
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/StyleRule.h b/Userland/Libraries/LibWeb/CSS/Parser/Rule.h
similarity index 63%
rename from Userland/Libraries/LibWeb/CSS/Parser/StyleRule.h
rename to Userland/Libraries/LibWeb/CSS/Parser/Rule.h
index 83e1708998..3f8d63d6ae 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/StyleRule.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Rule.h
@@ -15,24 +15,24 @@
 
 namespace Web::CSS::Parser {
 
-class StyleRule : public RefCounted<StyleRule> {
+class Rule : public RefCounted<Rule> {
 public:
     enum class Type {
         At,
         Qualified,
     };
 
-    static NonnullRefPtr<StyleRule> make_at_rule(FlyString name, Vector<ComponentValue> prelude, RefPtr<Block> block)
+    static NonnullRefPtr<Rule> make_at_rule(FlyString name, Vector<ComponentValue> prelude, RefPtr<Block> block)
     {
-        return adopt_ref(*new StyleRule(Type::At, move(name), move(prelude), move(block)));
+        return adopt_ref(*new Rule(Type::At, move(name), move(prelude), move(block)));
     }
 
-    static NonnullRefPtr<StyleRule> make_qualified_rule(Vector<ComponentValue> prelude, RefPtr<Block> block)
+    static NonnullRefPtr<Rule> make_qualified_rule(Vector<ComponentValue> prelude, RefPtr<Block> block)
     {
-        return adopt_ref(*new StyleRule(Type::Qualified, {}, move(prelude), move(block)));
+        return adopt_ref(*new Rule(Type::Qualified, {}, move(prelude), move(block)));
     }
 
-    ~StyleRule();
+    ~Rule();
 
     bool is_qualified_rule() const { return m_type == Type::Qualified; }
     bool is_at_rule() const { return m_type == Type::At; }
@@ -44,7 +44,7 @@ public:
     String to_string() const;
 
 private:
-    StyleRule(Type, FlyString name, Vector<ComponentValue> prelude, RefPtr<Block>);
+    Rule(Type, FlyString name, Vector<ComponentValue> prelude, RefPtr<Block>);
 
     Type const m_type;
     FlyString m_at_rule_name;
diff --git a/Userland/Libraries/LibWeb/Forward.h b/Userland/Libraries/LibWeb/Forward.h
index a05e23e26a..84b3c1c805 100644
--- a/Userland/Libraries/LibWeb/Forward.h
+++ b/Userland/Libraries/LibWeb/Forward.h
@@ -105,7 +105,7 @@ class Declaration;
 class DeclarationOrAtRule;
 class Function;
 class Parser;
-class StyleRule;
+class Rule;
 class Token;
 class Tokenizer;
 }