diff --git a/rtfd/public/html/index.html b/rtfd/public/html/index.html
index a6e378c..1312a5b 100644
--- a/rtfd/public/html/index.html
+++ b/rtfd/public/html/index.html
@@ -1,33 +1,51 @@
 <!DOCTYPE html>
 <html>
 
- <head>
-  <title>Title.</title>
- </head>
+  <head>
 
- <body>
+    <title>Title.</title>
 
-  <!-- Comment. -->
-  <h1>Root heading</h1>
+  </head>
 
-  <p>A paragraph.</p>
+  <body>
 
-  <h2>A Heading</h2>
-  <ol>Ordered:
-   <li>Some item</li>
-   <li>Another item</li>
-  </ol>
-  <p>Another paragraph.</p>
+    <header>
+      Header.
+    </header>
 
-  <h2>Another Heading</h2>
-  <ul>Unordered:
-   <li>Some item</li>
-   <li>Another item</li>
-  </ul>
-  <time>Time.</time>
+    <main>
 
-  <footer>Footer.</footer>
+      <!-- Comment. -->
+      <h1>Root heading</h1>
 
- </body>
+      <!-- sections -->
+
+      <p>A paragraph.</p>
+
+      <section>
+        <h2>A Heading</h2>
+        <ol>Ordered:
+          <li>Some item</li>
+          <li>Another item</li>
+        </ol>
+        <p>Another paragraph.</p>
+      </section>
+
+      <section>
+        <h2>Another Heading</h2>
+        <ul>Unordered:
+          <li>Some item</li>
+          <li>Another item</li>
+        </ul>
+        <time>Time.</time>
+      </section>
+
+    </main>
+
+    <footer>
+      Footer.
+    </footer>
+
+  </body>
 
 </html>
