diff --git a/dist/css/vex.css b/dist/css/vex.css
index 8dd38c1..91624f1 100644
--- a/dist/css/vex.css
+++ b/dist/css/vex.css
@@ -228,4 +228,7 @@
   background: #fff; }
 
 body.vex-open {
-  overflow: hidden; }
+  overflow: hidden; 
+  position: fixed;
+  width: 100%;
+}