diff --git a/site/theme/static/responsive.less b/site/theme/static/responsive.less
index af7562dc912d..53a26d786368 100644
--- a/site/theme/static/responsive.less
+++ b/site/theme/static/responsive.less
@@ -177,6 +177,7 @@
   .main-wrapper {
     width: 100%;
     border-radius: 0;
+    margin: 0;
   }
 
   footer {