diff --git a/web/cards.html b/web/cards.html
index 7a0fe50..1dedd76 100644
--- a/web/cards.html
+++ b/web/cards.html
@@ -10,6 +10,8 @@
     <script src="https://cdnjs.cloudflare.com/ajax/libs/tocas-ui/2.3.3/tocas.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
     <link rel="stylesheet" href="./gameUI.css">
+    <link rel="preload" href="./won.png" as="image">
+    <link rel="preload" href="./lose.png" as="image">
 </head>
 <body>
     <div class="ts grid" id="grid">
diff --git a/web/gameUI.css b/web/gameUI.css
index fbccbc2..682dfec 100644
--- a/web/gameUI.css
+++ b/web/gameUI.css
@@ -18,8 +18,8 @@
     background-color: rgb(250,250,250);
 }
 body,html {
-    height: 100%;
-    width: 100%;
+    height: 100vh;
+    width: 100vw;
     overflow: hidden;
 }
 label {
