Develop responsive landing page

Deliverables: 1. Responsive SEO landing page and checkout. 2. Create a MySQL database (saving user information required on the page, promotional codes with their status: active-inactive, orders information) with its integration to the page. 3. I could put these resources to the hosting [login to view URL] Requirements: 1. Develop a SEO landing page (no Word-Press. Design attached, I'll send you a Figma file), taking into account this design must be responsive. You should use HTML5, CSS, Bootstrap, Javascript for frontend. Any hosting supported language for backend and MySQL for database. 1.1. Header's countdown timer must decrease its time and should hide when time remaining is 0. 1.2. WhatsApp's button is floating and must redirect to chat to a phone's number. 1.3. Header must be on top when user scroll. 1.4. Dynamic payment details (quantity, shipment cost, total cost...) when user selects decrease or increase total products to buy. 1.5. Show a text when promotional code entered is not valid. 1.6. Check input fields are correct (use regex when possible) before continue system's flow. If incorrect, show respective alerts. 2. Some data should be saved on a database (user info) to future manual queries. 2.1. Some data should be get and updated (promotional code) from database. 3. This page and its resources must be supported on [login to view URL] hosting provider. 4. Log in Google Analytics the user behavior inside the landing page, i.e. buttons clicked, total time stayed there, user funnel... 5. I'll implement a payment gateway. So, I expect good practices and clean code.