Current to version 4. A compact reference work with many practical tips. Renowned author who has published over 40 German and English language specialist books. The paperback describes the CSS framework Bootstrap 4 in a concise and clear manner. Bootstrap was created around 2010 at Twitter and was designed from the outset with the goal of "mobile first," meaning it was developed primarily for mobile devices. Since then, Bootstrap has established itself as one of the best-known frameworks for designing websites. Particularly useful is a whole ecosystem of templates and extensions that designers and developers can utilize. This book is aimed at designers and web developers who are new to the web world or who wish to transition from other frameworks to Bootstrap. The presentation of the features is compact and comprehensible, complementing the official documentation.