Force dark border on category headers with !important

Co-authored-by: openhands <openhands@all-hands.dev>

content.py

@@ -1021,19 +1021,19 @@ h3 .header-link-icon {
     font-weight: 700;
     font-size: 13px;
     color: var(--color-text-dark);
-    border-bottom: 2px solid var(--color-primary-accent);
-    border-right: 2px solid #333;
+    border-bottom: 2px solid var(--color-primary-accent) !important;
+    border-right: 2px solid #333 !important;
     white-space: nowrap;
 }
 
 .dark .winners-unified-table .category-header {
     color: #fff;
-    border-bottom-color: var(--color-primary-accent);
-    border-right-color: var(--color-neutral-300);
+    border-bottom-color: var(--color-primary-accent) !important;
+    border-right-color: var(--color-neutral-300) !important;
 }
 
 .winners-unified-table .category-header:last-child {
-    border-right: none;
+    border-right: none !important;
 }
 
 .winner-category-icon-small {