diff --git a/kadai.css b/kadai.css
index 5f0b069..6b1c560 100644
--- a/kadai.css
+++ b/kadai.css
@@ -10,4 +10,5 @@
   a:link{color:#ff4500; text-decoration:underline;}
 .aka{color:#ff0000;}
 .ao{color:#0000ff}
-table,td,th{border-collapse:separate; border:1px solid  #000000;}
+td,th{border-collapse:separate; border:1px solid  #000000;}
+table{border:double #ff6633 2px ;}