diff --git a/margin/pd.css b/margin/pd.css
index 01a0398..c18f146 100644
--- a/margin/pd.css
+++ b/margin/pd.css
@@ -1,2 +1,6 @@
 .国旗{
-      border: solid brack;
+      border: solid black 1px;
+      padding: 20px;
+      margin: 20px;
+      background-color: red;
+}