diff --git a/index.html b/index.html
index 3d99a40..d1b9565 100644
--- a/index.html
+++ b/index.html
@@ -22,7 +22,7 @@
             <div>
                 <h1>This is awesome</h1>
                 <p>This is an awesome website that I am developing.</p>
-                <a href="#">Sign Up</a>
+                <a class="button" href="#">Sign Up</a>
             </div>
             <div>
                 <img src="https://dev.toanphu.vn/wp-content/uploads/6-4-1000x667.jpg">
@@ -43,9 +43,14 @@
         </blockquote>
     </div>
     <div class="call-to-action">
-        <div class="bule-box">
-            <h3>Call to Action</h3>
-            <button><a href="#">Click Here</a></button>
+        <div class="blue-box">
+            <div class="left">
+                <h3>Call to Action. It's Time</h3>
+                <p>Ali bababaiaia sdasf dfdfdsfsdf</p>
+            </div>
+            <div class="right">
+                <a class="button alt" href="#">Sign Up</a>
+            </div>
         </div>
     </div>
     <footer class="footer">Footer</footer>