Change mobile nav styles

internal/assets/templates/document.html

@@ -5,7 +5,7 @@
     <title>{{ block "document-title" . }}{{ end }}</title>
     <meta charset="UTF-8">
     <meta name="color-scheme" content="dark">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover">
     <meta name="apple-mobile-web-app-capable" content="yes">
     <meta name="mobile-web-app-capable" content="yes">
     <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">