diff --git a/config/html_report/hayabusa_report.css b/config/html_report/hayabusa_report.css
index e1729d3b..4dbd70cb 100644
--- a/config/html_report/hayabusa_report.css
+++ b/config/html_report/hayabusa_report.css
@@ -9,7 +9,7 @@ section {
   background-image: none;
   background-color:white;
   margin: 0 auto;
-  width:50%;
+  max-width:860px;
 	box-shadow: 10px 10px 25px 10px rgba(0, 0, 0, .5);
 }