Testing websites on your local system is fine, but we all know things can be very different on your live server. What if you could test your CSS on your live site, without showing it to the world? Charles Proxy is a very cool tool that lets you do exactly this.
Patrick's latest venture is online at DevDiner.com, a site for developers looking to get involved in emerging tech. He is a SitePoint contributing editor focused on exploring and sharing the possibilities of new technology such as the Internet of Things, virtual/augmented reality and wearables. He is an instructor at SitePoint Premium and O'Reilly, a Meta Pioneer and freelance web developer who loves every opportunity to tinker with something new in a tech demo.