For a long time CSS as being used to style websites and applications. With the appearance of pre-processors, SASS has become more and more popular but still hasn't found its way into mainstream production in shiny applications. In this presentation, we explore the different ways shiny currently uses CSS, as well as how you can leverage SASS to improve and simplify your project workflow. video presentation: https://youtu.be/nl0LBU9qbuc https://appsilon.com/shiny/