Match the new ui to old ui codes to make them working properly

I need an existing website rebuilt. I already have a design, I just need you to build a website for my small business. [login to view URL] this url is my new ui. My old ui website is [[login to view URL]] As i already have the ui/design, you need to code for backend to make my new ui working properly, all functions of old ui must match new ui. The jobs include but not limited to the followings:- - Confirm button not working (Cash or internet banking) - Total price does not include the service fee (7%) - Google Play Store & Apple Store icon should be on top of the page, not the bottom - "Place throught Whatsapp" text placed on top of the page - Change the add to cart buttons to match the old style (Red background white +) - Remarks box cancel button not working properly - The cart does not have a "remove" button - Fix the confirm button in the bottom of the page - Convert total price to fixed with 2 decimals (When they change qty on the cart) - Fix layout when zooming out the content only take one half of the screen - Remark box has to fit the screen in mobile - Mobile phone input popup login screen when entering the correct phone number - Make the price in popups bigger and bolder - Make the product code "Order" button work (Does not work) - Make cart always appear on the yellow bar - For the summary of the items make the product code text look smaller And the total price for all that 115usd, the price may vary depending on the first item on the list, it will be notified to you before continuing for anything else.