The conversation quickly turned to devices and how to make SharePoint work as well as possible in this new and changing set of displays. Eric’s answer was: responsive web design. Responsive web design allows us to look at a site like a fluid grid. The fluid, dynamic grid adapts itself to fit the information in display resolutions as different as those in a phone, a tablet, and a full desktop monitor. Keep in mind that the mix of display resolutions doubles if you consider landscape and portrait orientations available in all these devices.
The author of the original post about responsive web design, Ethan Marcotte, provided a reference siteto demo the concepts explained in his post. In this demo, you can observe how the elements in the page rearrange themselves to fit the current resolution as you resize your browser window. The demo left me wondering how a SharePoint website would react to different resolutions by using the fluid grid characteristic of responsive frameworks. Fortunately, Eric, along with some other people, developedResponsive SharePoint. Responsive SharePoint is a CodePlex project that you can use to try responsive frameworks on your SharePoint website.
I followed the provided instructions to install the resources by using Design Manager on an out-of-the-box publishing site. In no time, I was looking at how the site dynamically reacted to different resolutions as I resized my browser window. I decided to test the project by using the following display resolutions:
  • 1200x1900 (desktop, portrait orientation)
  • 768x1366 (tablet, portrait orientation)
  • 480x800 (smartphone, portrait orientation)
The results were amazing. Within 10 minutes, I had a SharePoint website that automatically adapts to display resolutions commonly used in devices. The following figure compares the website in commonly used display resolutions:
Figure 1. Comparison of resolutions of the SharePoint website using a responsive frameworkFigure 1. Comparison of resolutions of the SharePoint website using a responsive framework
How is this achieved?
In this post, I can only explain that Responsive SharePoint uses media queries to match the width of the display in the device and then applies a set of styles to present the content in the available space. For this to work, you need a browser that supports media queries. The latest version of the major browsers support such functionality. The following code example shows how to declare media queries:
@media (min-width: 769px) and (max-width: 979px) {
    /*
        Styles for display width 
        between 769 and 979 pixels
    */
}

@media (max-width: 768px) {
    /*
        Styles for display width 
        equal to 768 pixels and thinner
    */
}

@media (min-width: 1200px) {
    /*
        Styles for display width 
        equal to 1200 pixels and wider
    */
}
Of course there is much more to it. You can learn more by browsing the Responsive SharePoint CodePlex project.
The new design and branding features in SharePoint 2013 make it easy to create and edit your web design, including responsive designs. You can even use the tools you are familiar with by mapping a network drive to the SharePoint 2013 Master Page Gallery. In my case, I used Microsoft Expression Web 4 to browse and edit the master pages and CSS files.
I am excited about the new design and branding features and how we can use them in responsive web designs. For more information, see What's new with SharePoint 2013 site development.