diff --git a/src/pages/chat/chat.ts b/src/pages/chat/chat.ts
index b73e6c9..ffa94b4 100755
--- a/src/pages/chat/chat.ts
+++ b/src/pages/chat/chat.ts
@@ -91,7 +91,19 @@ class ChatElement extends HTMLElement {
                 <!-- Signature -->
                 <div class="signature-area">
                     <div class="signature-header">
-                        <h2>Signature</h2>
+                        <h1>Signature</h1>
+                        <button id="close-signature">x</button>
+                    </div>
+                    <div class="signature-content">
+                        <div class="signature-description">
+                            <h2>Description</h2>
+                        </div>
+                        <div class="signature-common">
+                            <h2>Documents in common</h2>
+                        </div>
+                        <div class="signature-by-role">
+                            <h2>Documents by role</h2>
+                        </div>
                     </div>
                 </div>
             </div>