fix margins
diff --git a/erpnext/www/book-appointment/index.html b/erpnext/www/book-appointment/index.html
index 8ddfc29..96774d5 100644
--- a/erpnext/www/book-appointment/index.html
+++ b/erpnext/www/book-appointment/index.html
@@ -30,7 +30,7 @@
 
         </div>
         <div class="row justify-content-center mt-3">
-            <div class="col-md-4">
+            <div class="col-md-4 mb-3">
                 <button class="btn btn-primary form-control" id="next-button">Next</button>
             </div>
         </div>