![]() The user-agent is the default styling for the HTML elements provided by the browser. There are 3 different origins of CSS which are user-agent stylesheets, the author stylesheets and the user stylesheets. There are two in particular that are examples of this, the rule as that contains descriptors as well as Other at-rules like or do follow the cascade as they contain more than descriptors within them. ![]() The ones that don’t follow it are the at-rules containing entities other than declarations. What is covered in the cascade?įor the most part a lot of CSS written follows the cascading process however there are a few properties or values that don’t participate. The cascade takes a unordered list of declared values for a given property on a given element, sorts them by their declaration’s precedence, and outputs a single cascaded value. Here’s the definition from the CSS Cascade Level 4 Spec. The benefit is that CSS can then resolve it’s own conflict working through those 4 factors. CSS works by taking in four factors, listed in order from highest weight to least weight: The cascade in cascading style sheets (CSS) is the process, or algorithm, that determines the properties applied to each element on the page. Cascading is probably one of the most important factors in CSS.
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