diff --git a/Bootstrap_new/css/style-portail.css b/Bootstrap_new/css/style-portail.css
index 00e2a9d5..cb74b6f3 100644
--- a/Bootstrap_new/css/style-portail.css
+++ b/Bootstrap_new/css/style-portail.css
@@ -21,7 +21,7 @@
   --input-h:      46px;
   --transition:   0.25s ease;
   --shadow-card:  0 8px 32px rgba(0,136,207,.13);
-  --shadow-btn:   0 4px 14px rgba(0,136,207,.35);
+  --shadow-btn:   0 2px 4px rgba(0,0,0,0.05);
 }
 
 /* ---------- Reset / Base ---------- */