create html /css for newsletter

We work with on online newsletter tool, Campaign monitor. We want to add the products from our website to the newsletter (some producten, different every month) We need the html and ccs (included) for putting in a product in the newsletter. We can use the 'products' lay-out in Campaign Monitor and add blocks with the products ourself. We need you to create the code for a product so we can add it to the campains our selfs. So create small html (with css) script for adding products to our newsletter. Keep in mind this is for a newsletter, so you need to know the standards (best practises) for that.