The HTML5 Random Gallery Slideshow has flexible or fluid size, it adapts it's size (width and height) based on the parent container (div or some other html tag) and every piece of the gallery will align and position accordingly. This basically means that it can be used in any kind of website, it does not matter if you need a small or large gallery, all you have to do is to add the gallery in a place that you have chosen in your website and the gallery will adapt and fit perfectly. Also if you like you can instantiate the gallery to fit the browser's viewport regardless of the screen resolution. This gallery is using the GPU (hardware acceleration) and the rendering speed and performance is impeccable on desktop computers and most importantly on mobile devices.