diff --git a/index.html b/index.html
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index 00000000..367f594b
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+++ b/index.html
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Domain Login</title>
+    <style>
+        body {
+            font-family: Arial, sans-serif;
+            margin: 0;
+            padding: 0;
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            background-color: #f4f4f9;
+        }
+
+        .container {
+            background: #fff;
+            padding: 20px;
+            border-radius: 10px;
+            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
+            width: 100%;
+            max-width: 400px;
+            text-align: center;
+        }
+
+        h1 {
+            color: #333;
+            margin-bottom: 20px;
+        }
+
+        .input-group {
+            margin-bottom: 15px;
+            text-align: left;
+        }
+
+        .input-group label {
+            display: block;
+            font-size: 14px;
+            color: #555;
+            margin-bottom: 5px;
+        }
+
+        .input-group input {
+            width: 100%;
+            padding: 10px;
+            border: 1px solid #ddd;
+            border-radius: 5px;
+            font-size: 16px;
+        }
+
+        .button {
+            display: inline-block;
+            background-color: #0366d6;
+            color: white;
+            padding: 10px 20px;
+            border: none;
+            border-radius: 5px;
+            font-size: 16px;
+            cursor: pointer;
+            text-decoration: none;
+        }
+
+        .button:hover {
+            background-color: #024fa4;
+        }
+    </style>
+</head>
+<body>
+    <div class="container" id="login-form">
+        <h1>Login</h1>
+        <div class="input-group">
+            <label for="username">Username</label>
+            <input type="text" id="username" placeholder="Enter your username">
+        </div>
+        <div class="input-group">
+            <label for="password">Password</label>
+            <input type="password" id="password" placeholder="Enter your password">
+        </div>
+        <button class="button" onclick="login()">Login</button>
+    </div>
+
+    <div class="container" id="logout-form" style="display: none;">
+        <h1>Welcome!</h1>
+        <p>You already entered our world.</p>
+    </div>
+
+    <script>
+        function login() {
+            const username = document.getElementById('username').value;
+            const password = document.getElementById('password').value;
+
+            if (username && password) {
+                document.getElementById('login-form').style.display = 'none';
+                document.getElementById('logout-form').style.display = 'block';
+            } else {
+                alert('Please enter your username and password.');
+            }
+        }
+    </script>
+</body>
+</html>
