diff --git a/includes/styles_mobile.css b/includes/styles_mobile.css
index b0de826..fafd40a 100644
--- a/includes/styles_mobile.css
+++ b/includes/styles_mobile.css
@@ -35,7 +35,7 @@ th:nth-child(4), td:nth-child(4), th:nth-child(9), td:nth-child(9) {
 header .banner {
     
     max-height: 150px;  /* before xmass 100 */
-    width: 100%;
+    max-width: 100%; /* before xmass width: 100% */
     margin: 10px auto 0px auto;
 }