Update app.py

app.py

@@ -41,6 +41,10 @@ def generate_qrcode(link):
 def add_custom_css():
     css = """
     <style>
+        stApp {
+            background: linear-gradient(to bottom, #87CEEB, #FFFFFF);  /* Dégradé du bleu clair (#87CEEB) vers le blanc (#FFFFFF) */
+        }
+        
         body {
             background: linear-gradient(135deg, #a8dadc, #f1faee);
             color: #1d3557;