Added "preferred size" label and input

Author: MattCarolus10

Form-Controls/index.html

@@ -25,6 +25,11 @@ <h1>Product Pick</h1>
           <label for="color">Preferred T-Shirt color:</label>
           <input name="color" id="color">
         </div>
+        <div>
+          <label for="size">Preferred T-Shirt size:</label>
+          <input name="size" id="size">
+        </div>
+