Your client wants its website to support multiple channel delivery. The client has new requirements:
1.The web pages should rearrange themselves for smaller devices and/or browser size and/or orientation.
2.Editors do not need to do anything more or learn anything new than what they do or know currently, with regard to their current 1024-pixel-wide website.
3.The client wants to keep the amount of code testing to a minimum.
Which solution best meets these requirements?