diff --git a/index.html b/index.html
index 7306ee9..772e456 100644
--- a/index.html
+++ b/index.html
@@ -12,12 +12,22 @@
         <div class="calculator">
             <div class="screen"></div>
             <div class="buttons">
-                <div class="col">
-                    
-                </div>
-                <div class="col"></div>
-                <div class="col"></div>
-                <div class="col"></div>
+                <button class="num">1</button>
+                <button class="num">2</button>
+                <button class="num">3</button>
+                <button class="operator">+</button>
+                <button class="num">4</button>
+                <button class="num">5</button>
+                <button class="num">6</button>
+                <button class="operator">-</button>
+                <button class="num">7</button>
+                <button class="num">8</button>
+                <button class="num">9</button>
+                <button class="operator">*</button>
+                <button class="num">0</button>
+                <button class="clear">C</button>
+                <button class="equal">=</button>
+                <button class="operator">/</button>
             </div>
         </div>
     </main>