diff --git a/foundations/03-grouping-selectors/COMPLETED.md b/foundations/03-grouping-selectors/COMPLETED.md
new file mode 100644
index 0000000..6f0cec2
--- /dev/null
+++ b/foundations/03-grouping-selectors/COMPLETED.md
@@ -0,0 +1 @@
+# Complete
\ No newline at end of file
diff --git a/foundations/03-grouping-selectors/index.html b/foundations/03-grouping-selectors/index.html
index 796431e..691b38b 100644
--- a/foundations/03-grouping-selectors/index.html
+++ b/foundations/03-grouping-selectors/index.html
@@ -8,7 +8,7 @@
     <link rel="stylesheet" href="style.css">
   </head>
   <body>
-    <button>Click Me!</button>
-    <button>No, Click Me!</button>
+    <button class="first">Click Me!</button>
+    <button class="second">No, Click Me!</button>
   </body>
 </html>
\ No newline at end of file
diff --git a/foundations/03-grouping-selectors/style.css b/foundations/03-grouping-selectors/style.css
index e69de29..71efd70 100644
--- a/foundations/03-grouping-selectors/style.css
+++ b/foundations/03-grouping-selectors/style.css
@@ -0,0 +1,15 @@
+.first, 
+.second { 
+    font-family: Helvetica, 'Times New Roman', sans-serif;
+    font-size: 28px;
+}       
+
+.first {
+    background-color: black;
+    color: white;
+    font-weight: bold;
+}
+
+.second {
+    background-color: yellow;
+}
\ No newline at end of file
