diff --git a/404.html b/404.html
new file mode 100644
index 0000000..359ab75
--- /dev/null
+++ b/404.html
@@ -0,0 +1,138 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+	<meta charset="utf-8">
+	<meta http-equiv="X-UA-Compatible" content="IE=edge">
+	<meta name="viewport" content="width=device-width, initial-scale=1">
+	<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
+
+	<title>Page Not Found</title>
+
+	<!-- Google font -->
+	<link href="https://fonts.googleapis.com/css?family=Cabin:400,700" rel="stylesheet">
+	<link href="https://fonts.googleapis.com/css?family=Montserrat:900" rel="stylesheet">
+
+	<style>
+
+		* {
+              -webkit-box-sizing: border-box;
+                      box-sizing: border-box;
+            }
+
+            body {
+              padding: 0;
+              margin: 0;
+            }
+
+            #notfound {
+              position: relative;
+              height: 100vh;
+            }
+
+            #notfound .notfound {
+              position: absolute;
+              left: 50%;
+              top: 50%;
+              -webkit-transform: translate(-50%, -50%);
+                  -ms-transform: translate(-50%, -50%);
+                      transform: translate(-50%, -50%);
+            }
+
+            .notfound {
+              max-width: 520px;
+              width: 100%;
+              line-height: 1.4;
+              text-align: center;
+            }
+
+            .notfound .notfound-404 {
+              position: relative;
+              height: 240px;
+            }
+
+            .notfound .notfound-404 h1 {
+              font-family: 'Montserrat', sans-serif;
+              position: absolute;
+              left: 50%;
+              top: 50%;
+              -webkit-transform: translate(-50%, -50%);
+                  -ms-transform: translate(-50%, -50%);
+                      transform: translate(-50%, -50%);
+              font-size: 252px;
+              font-weight: 900;
+              margin: 0px;
+              color: #262626;
+              text-transform: uppercase;
+              letter-spacing: -40px;
+              margin-left: -20px;
+            }
+
+            .notfound .notfound-404 h1>span {
+              text-shadow: -8px 0px 0px #fff;
+            }
+
+            .notfound .notfound-404 h3 {
+              font-family: 'Cabin', sans-serif;
+              position: relative;
+              font-size: 16px;
+              font-weight: 700;
+              text-transform: uppercase;
+              color: #262626;
+              margin: 0px;
+              letter-spacing: 3px;
+              padding-left: 6px;
+            }
+
+            .notfound h2 {
+              font-family: 'Cabin', sans-serif;
+              font-size: 20px;
+              font-weight: 400;
+              text-transform: uppercase;
+              color: #000;
+              margin-top: 0px;
+              margin-bottom: 25px;
+            }
+
+            @media only screen and (max-width: 767px) {
+              .notfound .notfound-404 {
+                height: 200px;
+              }
+              .notfound .notfound-404 h1 {
+                font-size: 200px;
+              }
+            }
+
+            @media only screen and (max-width: 480px) {
+              .notfound .notfound-404 {
+                height: 162px;
+              }
+              .notfound .notfound-404 h1 {
+                font-size: 162px;
+                height: 150px;
+                line-height: 162px;
+              }
+              .notfound h2 {
+                font-size: 16px;
+              }
+            }
+
+	</style>
+
+</head>
+
+<body>
+
+	<div id="notfound">
+		<div class="notfound">
+			<div class="notfound-404">
+				<h3>Oops! Page not found</h3>
+				<h1><span>4</span><span>0</span><span>4</span></h1>
+			</div>
+			<h2>we are sorry, work under progress</h2>
+		</div>
+	</div>
+
+</body>
+
+</html>
diff --git a/index.html b/index.html
index fc081d9..3d03f94 100644
--- a/index.html
+++ b/index.html
@@ -2,6 +2,8 @@
 <html lang="en">
 <head>
     <meta charset="UTF-8">
+	<meta http-equiv="X-UA-Compatible" content="IE=edge">
+	<meta name="viewport" content="width=device-width, initial-scale=1">
     <title>Parallel Corpus Creation</title>
     <style>
         a.button {
@@ -41,22 +43,22 @@
 
             <tr>
                 <td width="auto" align="left">Crime And Punishment(EN) - Verbrechen und Strafe(DE)</td>
-                <td align="center"><a class="button" href="xslt/action.html">View HTML</a></td>
+                <td align="center"><a class="button" href="404.html">View HTML</a></td>
             </tr>
 
             <tr>
                 <td width="auto" align="left">Crime And Punishment(EN) - Преступление и наказание(RU)</td>
-                <td align="center"><a class="button" href="xslt/action.html">View HTML</a></td>
+                <td align="center"><a class="button" href="404.html">View HTML</a></td>
             </tr>
 
             <tr>
                 <td width="auto" align="left">The Gambler(EN) - Der Spieler(DE)</td>
-                <td align="center"><a class="button" href="xslt/action.html">View HTML</a></td>
+                <td align="center"><a class="button" href="404.html">View HTML</a></td>
             </tr>
 
             <tr>
                 <td width="auto" align="left">The Gambler(EN) - Игрок(RU)</td>
-                <td align="center"><a class="button" href="xslt/action.html">View HTML</a></td>
+                <td align="center"><a class="button" href="404.html">View HTML</a></td>
             </tr>
 
             <tr>
