Need CSS Expert for 12 hours

This project involves using CSS to re-size and center images, of various sizes and proportions into two templates - one with a thumbnail image, the other with the full-size version. The thumbail template can be seen at: [login to view URL] The full size at: [login to view URL] This quick project can be split into two parts. 1. Use CSS to resize images I want to dynamically pull in images as backgrounds to my template layout, however these images could be of any size. Using only CSS, I would like to resize these background images to ensure that: - The image never appears more than 200px wide - The image never appears more than 200px tall - Images smaller than 200x200 are not resized at all - Aspect ratio is always maintained Bear in mind that the images I will pull in are always of different size and proportion - this must be a flexible and dynamic solution. 2. Center the image within a div What I want is to align an image (of variable size) right in the centre / middle of the parent div, so that there is an equal amount of whitespace on all four sides. ## Deliverables 1) All deliverables will be considered "work made for hire" under U.S. Copyright law. Employer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the employer on the site per the worker's Worker Legal Agreement). 2) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 3) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Employer's environment--Deliverables must be installed by the Worker in ready-to-run condition in the Employer's environment. b) For all others including desktop software or software the employer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this project. ## Platform CSS