iotaCSS is a new SASS based framework built by Dimitris Psaropoulos for creating lightweight, performant, readable and fully responsive interfaces.
One of the most important features of iotaCSS is that it’s design agnostic: in other words, instead of forcing you to design in a specific way, it fully adapts on your design..
Furthermore, the framework uses BEM syntax, provides flexbox and RTL support, is fully responsive and customisable and include many useful components ready to be used.