CSS redesign on a few pages- Only CSS to be modified

We have a desktop program that generates html pages to display vacation rentals. It produces html pages with CSS style included in the pages. In the main page there are linked sections for description, photos,calendar and contact section. Two extra CSS stylesheet is also produced to override the pages CSS These file we need changed.. One for goupe pages the other for sigle properties but almost the same. The only changes to be made are through css We just need the pages restyled similar to an example that we will provide. We are looking for somebody who will work efficiently and at a low price. We will pay $ 30 for this. If all goes well we would ongoing similar projects.