scrolling adjustment

viewer/src/app.html

@@ -6,7 +6,6 @@
 	<link rel="icon" href="%sveltekit.assets%/favicon.png" />
 	<link rel="stylesheet" href="%sveltekit.assets%/global.css" />
 	<link href='https://fonts.googleapis.com/css?family=Roboto' rel='stylesheet'>
-	<script src="https://cdnjs.cloudflare.com/ajax/libs/iframe-resizer/4.3.1/iframeResizer.contentWindow.min.js"></script>
 	<meta name="viewport" content="width=device-width" />
 	%sveltekit.head%
 </head>

viewer/static/global.css

@@ -10,6 +10,8 @@ body {
     padding-right: 15px;
     margin-left: auto;
     margin-right: auto;
+    max-height: 100vh;
+    overflow-y: auto;
 
     @media (min-width: 576px) {
         max-width: 540px;