I'm having some trouble with a C# project where I need to create a new WEB SITE to develop a layout for shopping cart and apply CSS. I need to write the necessary methods to add and remove contents from the cart. Add shopping cart functionality to my project.

Here are the requirements

1) The front end page must be HTML (not web form ASPX)

2) The page should contain at least one select box to contain categories, and one table/select box for items

3) The user will select the category from the select box, then the table/select box will be filled with items based on the first selection.

4) The user will select an item to be added to the cart

5) Add functionality to remove, edit or delete to the cart

6) Create a button to display the content of the cart with option to continue shopping

7) On exist, ask for the customer info, such as name, address,...

8) Do not use any databases. The content (data) of any of the select boxes can come from the service.

Use any web services technique, such as Page_Load, Web method, or WEB API2 (Do not use standard MVC)