Add concise form requirements as comments above form

Author: MouawiaElkhalifa

Form-Controls/index.html

@@ -12,6 +12,18 @@ <h1>Product Pick</h1>
   </header>
 
   <main>
+     <!--
+  Form requirements:
+  - HTML only (no CSS or JS)
+  - All inputs have associated labels
+  - All fields required
+  - Valid name (min 2 characters)
+  - Valid email address
+  - Choose 1 of 3 colors
+  - Choose 1 of 6 sizes (XS–XXL)
+  - No form action
+-->
+
     <form>
       <fieldset>
         <legend>Customer Details</legend>