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CJ Gammon is a Creative Technologist at Adobe focusing on new web technology. With the goal to showcase the creative potential of the web and inspire the community through innovative applications and experiences.
As Web designers, we are largely constrained by the layout features available to us. Content placed inside a container will often naturally extend the container vertically, wrapping the content. If a design requires elements to remain a certain height, then our options are limited. In these cases, we can only add a scroll bar or hide the overflow. The CSS Regions specification provides a new option.
Regions are a new part of the CSS specification, so not all browsers have implemented them, and in some cases you might have to enable a flag to use them. They have recently gained support in iOS7 and Safari 7, as well as Safari 6.1+. Adobe maintains a list of supported browsers and instructions on enabling regions and other features.