When you start to build a website or app how often do you ask yourself what frontend tool should I use? What about the layout? Should I use floats, a grid system, or venture into flexbox? Do I use pixels or ems for the typography media queries? What about browser compatibility and so on? Sometimes the toughest part about building a website or app is knowing where to start or how to design and build a thing. In this book, I’ll teach you how Bootstrap, one of the most popular open source frontend frameworks, can help you develop a functional design and layout in little time.