If you are worried that hidden text on your website might impact on your rankings then here is the answer. It depends upon if it improves the user experience.
Keyword: responsive web design
Interesting posts from the worlds of programming, technology, search engine optimisation and online life in general.
Google is to penalise sites not optimised for desktop and mobile users. A look at what mobile-friendly means and the benefits of responsive web design for SEO.
Sites that use responsive web design will display content differently depending on whether you are viewing the site on a mobile device or not. Here I look at the first responsive website that I have worked on.