Add placeholder option to size select dropdown

Author: Vitalii-code

Form-Controls/index.html

@@ -38,6 +38,7 @@ <h1>Product Pick</h1>
         <!-- colours -->
         <label for="color">Choose a color:</label>
         <select id="color" name="color">
+          <option value="red">Choose a colour</option>
           <option value="red">Red</option>
           <option value="green">Green</option>
           <option value="blue">Blue</option>
@@ -46,6 +47,7 @@ <h1>Product Pick</h1>
         <!-- sizes -->
         <label for="size">Choose a size:</label>
         <select id="size" name="size">
+          <option selected disabled">Choose a size</option>
           <option value="XS">XS</option>
           <option value="S">S</option>
           <option value="M">M</option>