Sertin Sertin is a multi-purpose, parallax, single page, HTML5 Bootstrap template Essentia Essentia is a fully featured single-page Bootstrap (v2) template. Open up the original Fireworks design file if you haven’t already and we can begin extracting the images we need. There are numerous professionally designed templates available, but fairly often they require a high degree of customization. Instead, we have focussed on highlighting 50 fully-featured, creatively designed, and of course, free Bootstrap templates, that we are sure you will love and appreciate. Thanks to a fully responsive design the web template will automatically adjust to any screen resolution.