diff --git a/game.php b/game.php
index 95e9273..afac614 100644
--- a/game.php
+++ b/game.php
@@ -50,6 +50,21 @@ if ($msg) db::c()->query('INSERT INTO `chat` (`cid`, `uid`, `msg`) VALUES (?i, ?
             width: 15%;
             padding: 10px;
         }
+        .mainwrap {
+            position: relative;
+            padding-bottom: 56.25%; /* proportion value to aspect ratio 16:9 (9 / 16 = 0.5625 or 56.25%) */
+            padding-top: 30px;
+            height: 0;
+            overflow: hidden;
+        }
+
+        .mainwrap iframe {
+            position: absolute;
+            top: 0;
+            left: 0;
+            width: 100%;
+            height: 100%;
+        }
     </style>
 </head>
 
@@ -65,7 +80,9 @@ if ($msg) db::c()->query('INSERT INTO `chat` (`cid`, `uid`, `msg`) VALUES (?i, ?
     <a href="/moderators.php" title="Модераторы" target="main"><img src="http://placehold.it/32x32/33ff33?text=M"/></a>
     <a href="/forum.php" title="Форум" target="main"><img src="http://placehold.it/32x32?text=F"/></a>
 </header>
-<iframe name="main" src="main.php" width=100%></iframe>
+<div class="mainwrap">
+    <iframe name="main" src="main.php" width=100%></iframe>
+</div>
 <iframe name="chat" src="chat.php" width=100%></iframe>
 <footer>
     <form action="chat.php" method="post">