diff --git a/Bootstrap_new/css/theme-modern.css b/Bootstrap_new/css/theme-modern.css
index c1235b8c..417ddd19 100644
--- a/Bootstrap_new/css/theme-modern.css
+++ b/Bootstrap_new/css/theme-modern.css
@@ -491,7 +491,7 @@ h1, h2, h3, h4, h5, h6, .fw-bold, .fw-semibold {
     color: var(--text-muted);
     text-decoration: none;
     transition: var(--transition-fast);
-    border-bottom: 2px solid transparent;
+    border-bottom: 1px solid transparent;
     flex-shrink: 0;
 }