Update heading styles for light and dark themes

Added CSS rules to ensure consistent heading colors and font weights in .section-header and .contribution-section for both light and dark themes.

Author: Adez017

src/pages/community/community.css

@@ -876,4 +876,51 @@
   .thank-you-content {
     padding: 0 20px 24px;
   }
-}
+}
+.section-header h2,
+.section-header h3,
+.contribution-section h2,
+.contribution-section h3 {
+  color: #1e293b;
+  font-weight: 700;
+}
+
+[data-theme='dark'] .section-header h2,
+[data-theme='dark'] .section-header h3,
+[data-theme='dark'] .contribution-section h2,
+[data-theme='dark'] .contribution-section h3 {
+  color: #ffffff;
+}
+
+/* force the heading for a constant theme */
+.contribution-section > h2,
+.contribution-section > h3,
+.contribution-section > h4 {
+  color: #1e293b;
+  font-weight: 700;
+}
+
+[data-theme='dark'] .contribution-section > h2,
+[data-theme='dark'] .contribution-section > h3,
+[data-theme='dark'] .contribution-section > h4 {
+  color: #ffffff;
+}
+
+/* Generic fix for any heading contribution sections */
+.contribution-section h1,
+.contribution-section h2,
+.contribution-section h3,
+.contribution-section h4,
+.contribution-section h5,
+.contribution-section h6 {
+  color: #1e293b;
+}
+
+[data-theme='dark'] .contribution-section h1,
+[data-theme='dark'] .contribution-section h2,
+[data-theme='dark'] .contribution-section h3,
+[data-theme='dark'] .contribution-section h4,
+[data-theme='dark'] .contribution-section h5,
+[data-theme='dark'] .contribution-section h6 {
+  color: #ffffff;
+}