A CSS rule is a grouping of one or more CSS properties which are to be applied to one or more target HTML elements. A CSS rule consists of a CSS selector and a set of CSS properties. The CSS selector determines what HTML elements to target with the CSS rule.
What are the 3 parts of a CSS rule?
The CSS syntax consists of a set of rules. These rules have 3 parts: a selector, a property, and a value.
What are 2 components of a CSS rule?
A CSS rule consists of two main parts: selector (‘h1’) and declaration (‘color: red’). In HTML, element names are case-insensitive so ‘h1’ works just as well as ‘H1’. The declaration has two parts: property name (‘color’) and property value (‘red’).
What is a valid CSS rule?
The :valid CSS pseudo-class represents any <input> or other <form> element whose contents validate successfully. This allows to easily make valid fields adopt an appearance that helps the user confirm that their data is formatted properly.
What are the important features of CSS?
CSS benefits accessibility primarily by separating document structure from presentation. Style sheets were designed to allow precise control – outside of markup – of character spacing, text alignment, object position on the page, audio and speech output, font characteristics, etc.
What is a rule set?
Rule set definitions are a collection of data rule definitions. … Rule sets provide the capability to achieve this broader, more holistic, view of a data source and its records by executing and evaluating multiple rules together against individual records.
What is CSS property value?
The used value of a CSS property is its value after all calculations have been performed on the computed value. After the user agent has finished its calculations, every CSS property has a used value. The used values of dimensions (e.g., width , line-height ) are in pixels.
Which is CSS syntax?
The selector points to the HTML element you want to style. The declaration block contains one or more declarations separated by semicolons. Each declaration includes a CSS property name and a value, separated by a colon.
What is an example for CSS property?
CSS PropertiesOrder by Category
|background-clip||Specifies the painting area of the background.|
|background-color||Defines an element’s background color.|
|background-image||Defines an element’s background image.|
|background-origin||Specifies the positioning area of the background images.|