diff --git a/product-list.html b/product-list.html
index 7cc59bb..a34a3cc 100644
--- a/product-list.html
+++ b/product-list.html
@@ -40,6 +40,18 @@
             background-color: red;
             border-color: red;
         }
+
+        .form-control {
+            background-color: #212226;
+            border-color: #212226;
+            color: white;
+        }
+
+        .form-control:valid {
+            background-color: #212226;
+            border-color: #212226;
+            color: white;
+        }
     </style>
 </head>
 
@@ -100,7 +112,7 @@
             </select>
         </div>
         <div class="col col-md-auto">
-            <button class="btn btn-primary" type="button">Filter</button>
+            <button class="btn btn-primary btn-product-card" type="button">Filter</button>
         </div>
     </div>
 </div>