diff --git a/theme/standard/styles_layout.css b/theme/standard/styles_layout.css
index 547114a5ba3..bd621d0ec6c 100644
--- a/theme/standard/styles_layout.css
+++ b/theme/standard/styles_layout.css
@@ -118,6 +118,10 @@ form {
     border-style:solid;
 }
 
+.forumpostindent {
+    margin-left: 30px;
+}
+
 /* weblib.php table */
 .tabledivider {
     border-width:1px;