While mobile games have been limited by small screens, bandwidth, and network response times, this is an area which is changing quickly.
尽管移动游戏受到小屏幕、带宽和网络响应时间的限制，但是这个领域正在迅速地变化。
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Interaction and Collaboration services — Presents a service or set of services to a human user through a browser, PC, mobile device, voice response system, etc.
The security in backwards compatibility is nice, but if you’re looking to get the best response from the larger mobile audience it’s best to define specific CSS files for unique occasions.