Imagine if you set the content block of a site to be 70% of the browser window width, and then all of its children adopted a width of 70% of their parent elements? Designing page layouts with CSS would be a nightmare. For instance, margins and width are not inherited, since it is unlikely that a child element requires the same margins as its parent. Not all CSS properties are inherited, because it does not make sense for some of them to be. Inheritance is the mechanism by which certain properties are passed on from a parent element down to its children, in the same fashion as genetics: if parents have blue eyes, their children will probably also have blue eyes. This article provides an overview of both concepts. The cascade relates to CSS declarations being applied to a document, and how conflicting rules do or do not override each other.Inheritance is associated with how the elements in the HTML markup inherit properties from their parent (containing) elements and pass them on to their children. ![]() The two concepts are closely related, yet different: Inheritance and the cascade are two fundamental concepts in CSS, that are important to understand. This guide explains inheritance and the cascade, two fundamental concepts in CSS.
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