diff --git a/src/components/nav-menu.css b/src/components/nav-menu.css
index a37c69e5..0e8e302f 100644
--- a/src/components/nav-menu.css
+++ b/src/components/nav-menu.css
@@ -14,7 +14,7 @@
       'left right';
     padding: 0;
     width: 22em;
-    max-width: 100%;
+    max-width: calc(100vw - 16px);
   }
   .nav-menu .top-menu {
     grid-area: top;