diff --git a/lib/widgets/content.dart b/lib/widgets/content.dart
index 92e04ff9f4..f5cf73b0a7 100644
--- a/lib/widgets/content.dart
+++ b/lib/widgets/content.dart
@@ -245,14 +245,15 @@ class Heading extends StatelessWidget {
       HeadingLevel.h5 => 1.05,
       HeadingLevel.h6 => 1.0,
     };
+    final ambientTextStyle = DefaultTextStyle.of(context).style;
     return Padding(
       padding: const EdgeInsets.only(top: 15, bottom: 5),
       child: _buildBlockInlineContainer(
-        style: TextStyle(
-          fontSize: kBaseFontSize * emHeight,
-          height: 1.4,
-        )
-          .merge(weightVariableTextStyle(context, wght: 600)),
+        style: bolderWghtTextStyle(ambientTextStyle, by: 200)
+          .merge(TextStyle(
+            fontSize: kBaseFontSize * emHeight,
+            height: 1.4,
+          )),
         node: node));
   }
 }
diff --git a/test/widgets/content_test.dart b/test/widgets/content_test.dart
index c44ae088c4..49b2c6f139 100644
--- a/test/widgets/content_test.dart
+++ b/test/widgets/content_test.dart
@@ -211,6 +211,25 @@ void main() {
         plainContent('<h1>one</h1>\n<h2>two</h2>\n<h3>three</h3>\n<h4>four</h4>\n<h5>five</h5>'));
       check(find.byType(Heading).evaluate()).length.equals(5);
     });
+
+    testFontWeight('h1 in spoiler header',
+      expectedWght: 900,
+      // ```spoiler # h1
+      // content
+      // ```
+      content: plainContent(
+        '<div class="spoiler-block"><div class="spoiler-header">\n'
+          '<h1>h1</h1>\n'
+          '</div><div class="spoiler-content" aria-hidden="true">\n'
+          '<p>content</p>\n'
+          '</div></div>'
+
+      ),
+      styleFinder: (tester) {
+        final root = tester.renderObject<RenderParagraph>(find.textContaining('h1')).text;
+        return mergedStyleOfSubstring(root, 'h1')!;
+      },
+    );
   });
 
   group('Spoiler', () {
@@ -567,6 +586,21 @@ void main() {
       ),
       styleFinder: findWordBold,
     );
+
+    testFontWeight('in h1 in spoiler header',
+      expectedWght: 1000,
+      // ```spoiler # h1: regular **bold**
+      // content
+      // ```
+      content: plainContent(
+        '<div class="spoiler-block"><div class="spoiler-header">\n'
+          '<h1>h1: regular <strong>bold</strong></h1>\n'
+          '</div><div class="spoiler-content" aria-hidden="true">\n'
+          '<p>content</p>\n'
+          '</div></div>'
+      ),
+      styleFinder: findWordBold,
+    );
   });
 
   testContentSmoke(ContentExample.emphasis);