diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index 55d4847961..179a536eb9 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -68,6 +68,7 @@ set(SOURCES
     CSS/StyleValues/BackgroundRepeatStyleValue.cpp
     CSS/StyleValues/BackgroundSizeStyleValue.cpp
     CSS/StyleValues/BackgroundStyleValue.cpp
+    CSS/StyleValues/BorderRadiusShorthandStyleValue.cpp
     CSS/StyleValues/BorderStyleValue.cpp
     CSS/Supports.cpp
     CSS/SyntaxHighlighter/SyntaxHighlighter.cpp
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index a715a5e4d5..418f5428f0 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -33,6 +33,7 @@
 #include <LibWeb/CSS/StyleValues/BackgroundRepeatStyleValue.h>
 #include <LibWeb/CSS/StyleValues/BackgroundSizeStyleValue.h>
 #include <LibWeb/CSS/StyleValues/BackgroundStyleValue.h>
+#include <LibWeb/CSS/StyleValues/BorderRadiusShorthandStyleValue.h>
 #include <LibWeb/CSS/StyleValues/BorderStyleValue.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/Dump.h>
diff --git a/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp b/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
index a2e7e535cb..0113ab2e97 100644
--- a/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
+++ b/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
@@ -14,6 +14,7 @@
 #include <LibWeb/CSS/StyleComputer.h>
 #include <LibWeb/CSS/StyleValues/BackgroundRepeatStyleValue.h>
 #include <LibWeb/CSS/StyleValues/BackgroundStyleValue.h>
+#include <LibWeb/CSS/StyleValues/BorderRadiusShorthandStyleValue.h>
 #include <LibWeb/CSS/StyleValues/BorderStyleValue.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/DOM/Element.h>
diff --git a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
index 383bd2d0f6..a8ab94605a 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
@@ -26,6 +26,7 @@
 #include <LibWeb/CSS/StyleComputer.h>
 #include <LibWeb/CSS/StyleSheet.h>
 #include <LibWeb/CSS/StyleValues/BackgroundStyleValue.h>
+#include <LibWeb/CSS/StyleValues/BorderRadiusShorthandStyleValue.h>
 #include <LibWeb/CSS/StyleValues/BorderStyleValue.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/DOM/Element.h>
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
index 93adda6910..623138e425 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
@@ -15,6 +15,7 @@
 #include <LibWeb/CSS/StyleValues/BackgroundRepeatStyleValue.h>
 #include <LibWeb/CSS/StyleValues/BackgroundSizeStyleValue.h>
 #include <LibWeb/CSS/StyleValues/BackgroundStyleValue.h>
+#include <LibWeb/CSS/StyleValues/BorderRadiusShorthandStyleValue.h>
 #include <LibWeb/CSS/StyleValues/BorderStyleValue.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/HTML/BrowsingContext.h>
@@ -302,11 +303,6 @@ ErrorOr<String> BorderRadiusStyleValue::to_string() const
     return String::formatted("{} / {}", TRY(m_properties.horizontal_radius.to_string()), TRY(m_properties.vertical_radius.to_string()));
 }
 
-ErrorOr<String> BorderRadiusShorthandStyleValue::to_string() const
-{
-    return String::formatted("{} {} {} {} / {} {} {} {}", TRY(m_properties.top_left->horizontal_radius().to_string()), TRY(m_properties.top_right->horizontal_radius().to_string()), TRY(m_properties.bottom_right->horizontal_radius().to_string()), TRY(m_properties.bottom_left->horizontal_radius().to_string()), TRY(m_properties.top_left->vertical_radius().to_string()), TRY(m_properties.top_right->vertical_radius().to_string()), TRY(m_properties.bottom_right->vertical_radius().to_string()), TRY(m_properties.bottom_left->vertical_radius().to_string()));
-}
-
 void CalculatedStyleValue::CalculationResult::add(CalculationResult const& other, Layout::Node const* layout_node, PercentageBasis const& percentage_basis)
 {
     add_or_subtract_internal(SumOperation::Add, other, layout_node, percentage_basis);
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValue.h
index babc355f95..030bd0a61d 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.h
@@ -535,47 +535,6 @@ private:
     } m_properties;
 };
 
-class BorderRadiusShorthandStyleValue final : public StyleValueWithDefaultOperators<BorderRadiusShorthandStyleValue> {
-public:
-    static ValueComparingNonnullRefPtr<BorderRadiusShorthandStyleValue> create(
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_left,
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_right,
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_right,
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_left)
-    {
-        return adopt_ref(*new BorderRadiusShorthandStyleValue(move(top_left), move(top_right), move(bottom_right), move(bottom_left)));
-    }
-    virtual ~BorderRadiusShorthandStyleValue() override = default;
-
-    auto top_left() const { return m_properties.top_left; }
-    auto top_right() const { return m_properties.top_right; }
-    auto bottom_right() const { return m_properties.bottom_right; }
-    auto bottom_left() const { return m_properties.bottom_left; }
-
-    virtual ErrorOr<String> to_string() const override;
-
-    bool properties_equal(BorderRadiusShorthandStyleValue const& other) const { return m_properties == other.m_properties; }
-
-private:
-    BorderRadiusShorthandStyleValue(
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_left,
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_right,
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_right,
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_left)
-        : StyleValueWithDefaultOperators(Type::BorderRadiusShorthand)
-        , m_properties { .top_left = move(top_left), .top_right = move(top_right), .bottom_right = move(bottom_right), .bottom_left = move(bottom_left) }
-    {
-    }
-
-    struct Properties {
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_left;
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_right;
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_right;
-        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_left;
-        bool operator==(Properties const&) const = default;
-    } m_properties;
-};
-
 class CalculatedStyleValue : public StyleValue {
 public:
     enum class ResolvedType {
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/BorderRadiusShorthandStyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValues/BorderRadiusShorthandStyleValue.cpp
new file mode 100644
index 0000000000..201f26a6b0
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/BorderRadiusShorthandStyleValue.cpp
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
+ * Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "BorderRadiusShorthandStyleValue.h"
+
+namespace Web::CSS {
+
+ErrorOr<String> BorderRadiusShorthandStyleValue::to_string() const
+{
+    return String::formatted("{} {} {} {} / {} {} {} {}", TRY(m_properties.top_left->horizontal_radius().to_string()), TRY(m_properties.top_right->horizontal_radius().to_string()), TRY(m_properties.bottom_right->horizontal_radius().to_string()), TRY(m_properties.bottom_left->horizontal_radius().to_string()), TRY(m_properties.top_left->vertical_radius().to_string()), TRY(m_properties.top_right->vertical_radius().to_string()), TRY(m_properties.bottom_right->vertical_radius().to_string()), TRY(m_properties.bottom_left->vertical_radius().to_string()));
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/BorderRadiusShorthandStyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValues/BorderRadiusShorthandStyleValue.h
new file mode 100644
index 0000000000..9f82881262
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/BorderRadiusShorthandStyleValue.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
+ * Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/CSS/StyleValue.h>
+
+namespace Web::CSS {
+
+class BorderRadiusShorthandStyleValue final : public StyleValueWithDefaultOperators<BorderRadiusShorthandStyleValue> {
+public:
+    static ValueComparingNonnullRefPtr<BorderRadiusShorthandStyleValue> create(
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_left,
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_right,
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_right,
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_left)
+    {
+        return adopt_ref(*new BorderRadiusShorthandStyleValue(move(top_left), move(top_right), move(bottom_right), move(bottom_left)));
+    }
+    virtual ~BorderRadiusShorthandStyleValue() override = default;
+
+    auto top_left() const { return m_properties.top_left; }
+    auto top_right() const { return m_properties.top_right; }
+    auto bottom_right() const { return m_properties.bottom_right; }
+    auto bottom_left() const { return m_properties.bottom_left; }
+
+    virtual ErrorOr<String> to_string() const override;
+
+    bool properties_equal(BorderRadiusShorthandStyleValue const& other) const { return m_properties == other.m_properties; }
+
+private:
+    BorderRadiusShorthandStyleValue(
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_left,
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_right,
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_right,
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_left)
+        : StyleValueWithDefaultOperators(Type::BorderRadiusShorthand)
+        , m_properties { .top_left = move(top_left), .top_right = move(top_right), .bottom_right = move(bottom_right), .bottom_left = move(bottom_left) }
+    {
+    }
+
+    struct Properties {
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_left;
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> top_right;
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_right;
+        ValueComparingNonnullRefPtr<BorderRadiusStyleValue const> bottom_left;
+        bool operator==(Properties const&) const = default;
+    } m_properties;
+};
+
+}