diff --git a/docs/index.html b/docs/index.html
index 90696ff..d8cf762 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -8,24 +8,20 @@
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet" />
     <style>
         body {
-            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-            min-height: 100vh;
-            display: flex;
+            display: block;
             align-items: center;
             font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
         }
 
         .container {
-            background: white;
-            border-radius: 12px;
-            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
-            padding: 40px;
+            padding-top: 40px;
+            max-width: 75%;
         }
 
         h1 {
-            color: #667eea;
+            color: #506be7;
             margin-bottom: 30px;
-            font-weight: 700;
+            font-weight: bold;
         }
 
         .toc-section {
@@ -33,12 +29,12 @@
         }
 
         .toc-section h2 {
-            color: #764ba2;
+            color: #667eea;
             font-size: 18px;
-            font-weight: 600;
             margin-bottom: 15px;
             border-bottom: 2px solid #667eea;
             padding-bottom: 8px;
+            font-weight: bold;
         }
 
         .toc-link {
@@ -46,30 +42,36 @@
             padding: 12px 16px;
             margin-bottom: 8px;
             background: #f8f9fa;
-            border-left: 4px solid #667eea;
+            border-left: 4px solid #adaeaf;
             text-decoration: none;
-            color: #333;
-            border-radius: 4px;
+            color: #333333;
             transition: all 0.2s ease;
         }
 
         .toc-link:hover {
-            background: #e7e9ff;
-            border-left-color: #764ba2;
-            transform: translateX(4px);
+            background: #f9f9fa88;
+            border-left: 4px solid #adaeaf88;
         }
 
         .description {
-            color: #666;
+            color: #666666;
             font-size: 14px;
             margin-top: 4px;
         }
+
+        .toc-link:hover .description {
+            color: #999999;
+        }
+
+        .toc-link:hover {
+            color: #999999;
+        }
     </style>
 </head>
 
 <body>
-    <div class="container" style="max-width: 600px">
-        <h1>📚 Structure of Programming Languages</h1>
+    <div class="container">
+        <h1>Structure of Programming Languages</h1>
 
         <div class="toc-section">
             <h2>Workbook Chapters</h2>
