What exactly do you want to do here? What is "styling" to you in this situation?
CSS?
Template design?
PSD?
Snippets are used for universal content that you might want to update periodically, such as a content banner in an email or page, or a footer for an email or a page. Using Segmentations+Dynamic Content can powerup Snippets too.
I've heard of examples of doing this in a newsletter where each News Section is a snippet that you update in the Snippet section and just send out the same Newsletter Email Asset every time, or a new one. Not sure I would do that, but possible. There are some reasons if you use Language dynamic content and there have been other examples on the forum and the Summit.
Better use of Snippets is scaling up mass changes.