diff --git a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
index 9d62aad8c7a..606b7f7e424 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
@@ -2479,6 +2479,8 @@ NonnullOwnPtr<StyleComputer::RuleCache> StyleComputer::make_rule_cache_for_casca
                 Optional<CSS::Selector::PseudoElement::Type> pseudo_element;
 
                 for (auto const& simple_selector : selector.compound_selectors().last().simple_selectors) {
+                    if (!rule_cache->has_has_selectors && simple_selector.type == CSS::Selector::SimpleSelector::Type::PseudoClass && simple_selector.pseudo_class().type == CSS::PseudoClass::Has)
+                        rule_cache->has_has_selectors = true;
                     if (!matching_rule.contains_pseudo_element) {
                         if (simple_selector.type == CSS::Selector::SimpleSelector::Type::PseudoElement) {
                             matching_rule.contains_pseudo_element = true;
@@ -2726,6 +2728,8 @@ void StyleComputer::build_rule_cache()
     m_author_rule_cache = make_rule_cache_for_cascade_origin(CascadeOrigin::Author);
     m_user_rule_cache = make_rule_cache_for_cascade_origin(CascadeOrigin::User);
     m_user_agent_rule_cache = make_rule_cache_for_cascade_origin(CascadeOrigin::UserAgent);
+
+    m_has_has_selectors = m_author_rule_cache->has_has_selectors || m_user_rule_cache->has_has_selectors || m_user_agent_rule_cache->has_has_selectors;
 }
 
 void StyleComputer::invalidate_rule_cache()
diff --git a/Userland/Libraries/LibWeb/CSS/StyleComputer.h b/Userland/Libraries/LibWeb/CSS/StyleComputer.h
index 9d854107343..66e1b4ee0ff 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleComputer.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleComputer.h
@@ -156,6 +156,8 @@ public:
     };
     void collect_animation_into(DOM::Element&, Optional<CSS::Selector::PseudoElement::Type>, JS::NonnullGCPtr<Animations::KeyframeEffect> animation, StyleProperties& style_properties, AnimationRefresh = AnimationRefresh::No) const;
 
+    [[nodiscard]] bool has_has_selectors() const { return m_has_has_selectors; }
+
 private:
     enum class ComputeStyleMode {
         Normal,
@@ -221,12 +223,15 @@ private:
         Vector<MatchingRule> other_rules;
 
         HashMap<FlyString, NonnullRefPtr<Animations::KeyframeEffect::KeyFrameSet>> rules_by_animation_keyframes;
+
+        bool has_has_selectors { false };
     };
 
     NonnullOwnPtr<RuleCache> make_rule_cache_for_cascade_origin(CascadeOrigin);
 
     RuleCache const& rule_cache_for_cascade_origin(CascadeOrigin) const;
 
+    bool m_has_has_selectors { false };
     OwnPtr<RuleCache> m_author_rule_cache;
     OwnPtr<RuleCache> m_user_rule_cache;
     OwnPtr<RuleCache> m_user_agent_rule_cache;