Complex sentence: Cappuccino developers never need to directly manipulate the DOM or design CSS documents, those tasks are handled by Cappuccino and the application developer can focus on the implementation of application features without being distracted by specifics of the rendering mechanism.
Split into simpler sentences: Cappuccino developers never need to directly manipulate the DOM or design CSS documents. Instead, those tasks are handled by Cappuccino, permitting the application developer to focus on the implementation of application features without being distracted by specifics of the rendering mechanism.