feat: add T-shirt size dropdown with 6 options

Author: codebyra

Form-Controls/index.html

@@ -43,6 +43,18 @@ <h1>Product Pick</h1>
     <option value="black">Black</option>
     <option value="white">White</option>
   </select>
+
+    <label for="size">T‑Shirt Size</label>
+  <select id="size" name="size" required>
+    <option value="">-- Select a size --</option>
+    <option value="xs">XS</option>
+    <option value="s">S</option>
+    <option value="m">M</option>
+    <option value="l">L</option>
+    <option value="xl">XL</option>
+    <option value="xxl">XXL</option>
+  </select>
+  
 </fieldset>
 
 <button type="submit">Submit Order</button>