BigCommerce design tweaks

I have a BigCommerce site that has several issues, nothing major. 1. Some of the layout of the product pages, pushes the right hand side navigation and blocks off the page 2. The styles are not right for the color scheme. For example, there's a gray gradient background thats not quite right for the design, and the font colors are not working appropriately 3. The "Buy" button on product pages is getting truncated in the design Overall, I need someone to come in and clean up the layout -- nothing major here. Requirement: should be familiar with BigCommerce and the template structure