Decomposing and modularizing means that a large software is being divided into smaller named components that have a well-defined interfaces which basically describes the component interactions. The main goal is to place these different functionalities as well as the responsibilities in different components.
Decomposition and modularization forms the principle of software design.
What happens when a property on an element has no value supplied is governed by style inheritance. A property should inherit its value from its parent element, according to this specification.
