diff --git a/modules/universal_table/index2.html.erb b/modules/universal_table/index2.html.erb
index 1bd0bf6..21be44b 100644
--- a/modules/universal_table/index2.html.erb
+++ b/modules/universal_table/index2.html.erb
@@ -47,6 +47,10 @@
        content: "No.";
     }
 
+    .universal-table-index thead > tr > th:first-child {
+       width: 4em;
+    }
+
     .universal-th-icon {
       border: 1px solid #eee;
       padding: 5px 8px;