From aa9fa88428ea15889d535e5691468106af334c2d Mon Sep 17 00:00:00 2001
From: Sam Atkins <sam@ladybird.org>
Date: Thu, 15 May 2025 10:58:21 +0100
Subject: [PATCH] LibWeb/CSS: Treat at-rule names insensitively to determine
 context type

`@MeDiA` is entirely valid.
---
 Libraries/LibWeb/CSS/Parser/RuleContext.cpp | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/Libraries/LibWeb/CSS/Parser/RuleContext.cpp b/Libraries/LibWeb/CSS/Parser/RuleContext.cpp
index cb12a793c14..4f41e5f065d 100644
--- a/Libraries/LibWeb/CSS/Parser/RuleContext.cpp
+++ b/Libraries/LibWeb/CSS/Parser/RuleContext.cpp
@@ -42,19 +42,19 @@ RuleContext rule_context_type_for_rule(CSSRule::Type rule_type)
 
 RuleContext rule_context_type_for_at_rule(FlyString const& name)
 {
-    if (name == "media")
+    if (name.equals_ignoring_ascii_case("media"sv))
         return RuleContext::AtMedia;
-    if (name == "font-face")
+    if (name.equals_ignoring_ascii_case("font-face"sv))
         return RuleContext::AtFontFace;
-    if (name == "keyframes")
+    if (name.equals_ignoring_ascii_case("keyframes"sv))
         return RuleContext::AtKeyframes;
-    if (name == "supports")
+    if (name.equals_ignoring_ascii_case("supports"sv))
         return RuleContext::AtSupports;
-    if (name == "layer")
+    if (name.equals_ignoring_ascii_case("layer"sv))
         return RuleContext::AtLayer;
-    if (name == "property")
+    if (name.equals_ignoring_ascii_case("property"sv))
         return RuleContext::AtProperty;
-    if (name == "page")
+    if (name.equals_ignoring_ascii_case("page"sv))
         return RuleContext::AtPage;
     return RuleContext::Unknown;
 }