If we think about advanced website development, sooner or later we’ll deal with JavaScript Task Runners. One of them is Gulp – a library available in NPM, which enables us to significantly automate our work. Gulp facilitates a compilation of Sass or Less files to CSS format; it allows to use Autoprefixer (a tool that will ensure the compatibility of our CSSs with multiple browsers) as well as to watch the progress of our work in many browsers/ devices in real time.