diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index 059fa78171..1e0b26d62a 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -89,6 +89,7 @@ set(SOURCES
     CSS/StyleValues/LinearGradientStyleValue.cpp
     CSS/StyleValues/ListStyleStyleValue.cpp
     CSS/StyleValues/NumericStyleValue.cpp
+    CSS/StyleValues/OverflowStyleValue.cpp
     CSS/StyleValues/RadialGradientStyleValue.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 928cb1015f..6f5e1e7fff 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -57,6 +57,7 @@
 #include <LibWeb/CSS/StyleValues/LinearGradientStyleValue.h>
 #include <LibWeb/CSS/StyleValues/ListStyleStyleValue.h>
 #include <LibWeb/CSS/StyleValues/NumericStyleValue.h>
+#include <LibWeb/CSS/StyleValues/OverflowStyleValue.h>
 #include <LibWeb/CSS/StyleValues/RadialGradientStyleValue.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/Dump.h>
diff --git a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
index 3f8c4852c3..358c09231c 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
@@ -41,6 +41,7 @@
 #include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
 #include <LibWeb/CSS/StyleValues/ListStyleStyleValue.h>
 #include <LibWeb/CSS/StyleValues/NumericStyleValue.h>
+#include <LibWeb/CSS/StyleValues/OverflowStyleValue.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/DOM/Element.h>
 #include <LibWeb/FontCache.h>
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
index 265277e3ad..f8eeda34f6 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
@@ -40,6 +40,7 @@
 #include <LibWeb/CSS/StyleValues/LinearGradientStyleValue.h>
 #include <LibWeb/CSS/StyleValues/ListStyleStyleValue.h>
 #include <LibWeb/CSS/StyleValues/NumericStyleValue.h>
+#include <LibWeb/CSS/StyleValues/OverflowStyleValue.h>
 #include <LibWeb/CSS/StyleValues/RadialGradientStyleValue.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/HTML/BrowsingContext.h>
@@ -1137,11 +1138,6 @@ ErrorOr<void> PositionValue::serialize(StringBuilder& builder) const
     return {};
 }
 
-ErrorOr<String> OverflowStyleValue::to_string() const
-{
-    return String::formatted("{} {}", TRY(m_properties.overflow_x->to_string()), TRY(m_properties.overflow_y->to_string()));
-}
-
 ErrorOr<String> PercentageStyleValue::to_string() const
 {
     return m_percentage.to_string();
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValue.h
index fca52733ec..e0af8d8356 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.h
@@ -627,35 +627,6 @@ private:
     NonnullOwnPtr<CalcSum> m_expression;
 };
 
-class OverflowStyleValue final : public StyleValueWithDefaultOperators<OverflowStyleValue> {
-public:
-    static ValueComparingNonnullRefPtr<OverflowStyleValue> create(ValueComparingNonnullRefPtr<StyleValue> overflow_x, ValueComparingNonnullRefPtr<StyleValue> overflow_y)
-    {
-        return adopt_ref(*new OverflowStyleValue(move(overflow_x), move(overflow_y)));
-    }
-    virtual ~OverflowStyleValue() override = default;
-
-    ValueComparingNonnullRefPtr<StyleValue> overflow_x() const { return m_properties.overflow_x; }
-    ValueComparingNonnullRefPtr<StyleValue> overflow_y() const { return m_properties.overflow_y; }
-
-    virtual ErrorOr<String> to_string() const override;
-
-    bool properties_equal(OverflowStyleValue const& other) const { return m_properties == other.m_properties; }
-
-private:
-    OverflowStyleValue(ValueComparingNonnullRefPtr<StyleValue> overflow_x, ValueComparingNonnullRefPtr<StyleValue> overflow_y)
-        : StyleValueWithDefaultOperators(Type::Overflow)
-        , m_properties { .overflow_x = move(overflow_x), .overflow_y = move(overflow_y) }
-    {
-    }
-
-    struct Properties {
-        ValueComparingNonnullRefPtr<StyleValue> overflow_x;
-        ValueComparingNonnullRefPtr<StyleValue> overflow_y;
-        bool operator==(Properties const&) const = default;
-    } m_properties;
-};
-
 class PercentageStyleValue final : public StyleValueWithDefaultOperators<PercentageStyleValue> {
 public:
     static ValueComparingNonnullRefPtr<PercentageStyleValue> create(Percentage percentage)
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/OverflowStyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValues/OverflowStyleValue.cpp
new file mode 100644
index 0000000000..433b1c1545
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/OverflowStyleValue.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 "OverflowStyleValue.h"
+
+namespace Web::CSS {
+
+ErrorOr<String> OverflowStyleValue::to_string() const
+{
+    return String::formatted("{} {}", TRY(m_properties.overflow_x->to_string()), TRY(m_properties.overflow_y->to_string()));
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/OverflowStyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValues/OverflowStyleValue.h
new file mode 100644
index 0000000000..d7f2540eaa
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/OverflowStyleValue.h
@@ -0,0 +1,45 @@
+/*
+ * 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 OverflowStyleValue final : public StyleValueWithDefaultOperators<OverflowStyleValue> {
+public:
+    static ValueComparingNonnullRefPtr<OverflowStyleValue> create(ValueComparingNonnullRefPtr<StyleValue> overflow_x, ValueComparingNonnullRefPtr<StyleValue> overflow_y)
+    {
+        return adopt_ref(*new OverflowStyleValue(move(overflow_x), move(overflow_y)));
+    }
+    virtual ~OverflowStyleValue() override = default;
+
+    ValueComparingNonnullRefPtr<StyleValue> overflow_x() const { return m_properties.overflow_x; }
+    ValueComparingNonnullRefPtr<StyleValue> overflow_y() const { return m_properties.overflow_y; }
+
+    virtual ErrorOr<String> to_string() const override;
+
+    bool properties_equal(OverflowStyleValue const& other) const { return m_properties == other.m_properties; }
+
+private:
+    OverflowStyleValue(ValueComparingNonnullRefPtr<StyleValue> overflow_x, ValueComparingNonnullRefPtr<StyleValue> overflow_y)
+        : StyleValueWithDefaultOperators(Type::Overflow)
+        , m_properties { .overflow_x = move(overflow_x), .overflow_y = move(overflow_y) }
+    {
+    }
+
+    struct Properties {
+        ValueComparingNonnullRefPtr<StyleValue> overflow_x;
+        ValueComparingNonnullRefPtr<StyleValue> overflow_y;
+        bool operator==(Properties const&) const = default;
+    } m_properties;
+};
+
+}