The WordPress theme used for this site is called, “Responsive“. This theme has the ability to display content on various devices such that important information can be viewed without side-scrolling. In other words, menus and content will move around on smaller screens and collapse in ways that make for a better browsing experience on such devices: e.g.; smart phones, tablets, and ‘phablets’.
NOTE: (FOR WORDPRESS EDITORS) Images ‘may’ automatically re-size to accommodate smaller screens. Images that have been given size dimensions “may” or ‘may not’ re-size. 9i.e.; If an image has bee assigned a specific width it may not re-size.) In that case, the width value should be changed to “auto”, thereby restoring the automatic re-size function. This kind of editing must be done in the HTML view.
A very handy way to test this behaviour is simply to shrink the size of the browser window on any computer. Another method; visit http://www.responsinator.com – where you can view any website in simulations of various screen sizes.