Update B2B Webite very simple requirement

I have a website backed on Joomla which is not user friendly. Need to update the existing webiste to update the design to make it more user friendly. The website is B2B with product descriptions and photographs some details about company contact details, Page to download catalogue. Backend is all available and no change is required. Please explain the past projects. Once supplier is selected you can propose the design Task to completed. Create a New Design (With Existing Template or New Template) which is user friendly. Post the products currently available on webiste. Transistion to new website with minimum downtime. B2B Site to sell Gift Articles and Jewelley. The Requirements are not huge so please dont bid more then what is budget. The work required is max of 1 day could be even less.