diff --git a/expression.html b/expression.html
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+<!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=1.0">
+   <title>Sixth Sense</title>
+   <!-- bootstrap core css -->
+  <link rel="stylesheet" type="text/css" href="css/bootstrap.css" />
+  <!-- progress barstle -->
+  <link rel="stylesheet" href="css/css-circular-prog-bar.css">
+  <!-- fonts style -->
+  <link href="https://fonts.googleapis.com/css?family=Poppins:400,700|Raleway:400,600&display=swap" rel="stylesheet">
+  <!-- font wesome stylesheet -->
+  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
+  <!-- Custom styles for this template -->
+  <link href="css/style.css" rel="stylesheet" />
+  <!-- responsive style -->
+  <link href="css/responsive.css" rel="stylesheet" />
+</head>
+<body>
+<div class="top_container">
+    <!-- header section strats -->
+    <header class="header_section">
+      <div class="container">
+        <nav class="navbar navbar-expand-lg custom_nav-container ">
+          <a class="navbar-brand" href="index.html">
+            <span>
+                Sixth Sense
+            </span>
+          </a>
+          <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
+            aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
+            <span class="navbar-toggler-icon"></span>
+          </button>
+          <div class="collapse navbar-collapse" id="navbarSupportedContent">
+            <div class="d-flex ml-auto flex-column flex-lg-row align-items-center">
+              <ul class="navbar-nav  ">
+                <li class="nav-item active">
+                  <a class="nav-link" href="index.html"> Home <span class="sr-only">(current)</span></a>
+                </li>
+              </ul>
+            </div>
+        </nav>
+      </div>
+    </header>
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