diff --git a/style-2018-08-29b.css b/style-2018-09-13.css
similarity index 99%
rename from style-2018-08-29b.css
rename to style-2018-09-13.css
index cb9bf08..3269657 100644
--- a/style-2018-08-29b.css
+++ b/style-2018-09-13.css
@@ -148,7 +148,7 @@ article {
   }
 }
 
-@media (min-width: 70em) {
+@media (min-width: 76em) {
   /* mise en deux colonnes */
   section {
     float: left;
diff --git a/tpl/_head.html b/tpl/_head.html
index cdc115f..bcb6e6e 100644
--- a/tpl/_head.html
+++ b/tpl/_head.html
@@ -1,4 +1,4 @@
-<link rel="stylesheet" type="text/css" href="{{tpl:BlogThemeURL}}/style-2018-08-29b.css" media="screen" />
+<link rel="stylesheet" type="text/css" href="{{tpl:BlogThemeURL}}/style-2018-09-13.css" media="screen" />
 <link rel="stylesheet" type="text/css" href="{{tpl:BlogQmarkURL}}pf=print.css" media="print" />
 
 {{tpl:include src="user_head.html"}}