Update app.py

app.py

@@ -1914,6 +1914,29 @@ ul.options[role="listbox"] {
   }
 }
 
+
+/* =========================================================
+   PRIMARY TAB SPACING FIX
+   Keep 01 / 02 / 03 evenly distributed across the top rail
+   on desktop while preserving the existing mobile behavior.
+   ========================================================= */
+@media (min-width: 801px) {
+  #main-tabs [role="tablist"] {
+    display: grid !important;
+    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
+    gap: 18px !important;
+    width: 100% !important;
+    align-items: center !important;
+  }
+
+  #main-tabs button[role="tab"] {
+    width: 100% !important;
+    min-width: 0 !important;
+    max-width: none !important;
+    margin: 0 !important;
+  }
+}
+
 '''