The Infinite Photo Grid with Lightbox has a fluid / flexible / responsive layout. Basically the grid is added into a HTML page into a div of your choice and it adapts based of that div's width and height. In the examples provided you can see a few ways in which you might use this grid, of course that other configurations are possible (please note that the examples are provided in the download files). Pure OOP JavaScript code, no usage of jQuery or other libraries, in this way there will be no incompatibilities with HTML pages that might be using jQuery or other JavaScript libraries. The Infinite Photo Grid with Lightbox is using the GPU (hardware acceleration) using HTML5 standards. The rendering speed and performance are impeccable on desktop computers and most importantly on mobile devices. it works in the following way: it will try to use CSS3 and if this is not available it will down fall to CSS2 or CSS1 for older browsers like IE7 and IE8.