Make edits to a live Opencart site

The site is on opencart. It is necessary to redesign the header of the site. Make repeating blocks on the spreading pages. Layout is required in the desktop and mobile versions. Make small changes to the structure of the site. Connect Tinkoff and Tinkoff Credit (update, previously connected). More details in the TOR. Layouts in figma. The budget is limited.
Features: there is a layout for the web version, the mobile version must be made up without the designers layout, just by evenly arranging the blocks.
Work only on a safe transaction or 100% post-payment.