diff --git a/data/master.html b/data/master.html
new file mode 100644
index 0000000..d460b16
--- /dev/null
+++ b/data/master.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html lang="ca">
+
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="stylesheet" href="bootstrap.min.css">
+    <link rel="stylesheet" href="style.css">
+    <title>Inici</title>
+</head>
+
+
+<body>
+    <div class="navbar" id="mainmenu">
+        <div class="navbar-brand">
+            <div class="col">
+                <label id="euss">EUSS</label>
+                <label id="euss">Cronòmetre LASER</label>
+                <span id="devName">&DeviceName&</span>
+            </div>
+        </div>
+    </div>
+    <div class="center" style="width: 300px; margin-left: auto; margin-right: auto;">
+        <@ContentPlaceHolder/>
+    </div>
+</body>
+
+</html>
\ No newline at end of file
