Module rules

CSS rules.

The CssRule enum includes all supported rules, and can be used to parse and serialize rules from CSS. Lists of rules (i.e. within a stylesheet, or inside another rule such as @media) are represented by CssRuleList.

Each rule includes a source location, which indicates the line and column within the source file where it was parsed. This is used when generating source maps.

Example

This example shows how you could parse a single CSS rule, and serialize it to a string.

use lightningcss::{
  rules::CssRule,
  traits::ToCss,
  stylesheet::{ParserOptions, PrinterOptions}
};

let rule = CssRule::parse_string(
  ".foo { color: red; }",
  ParserOptions::default()
).unwrap();

assert_eq!(
  rule.to_css_string(PrinterOptions::default()).unwrap(),
  ".foo {\n  color: red;\n}"
);

If you have a cssparser::Parser already, you can also use the parse and to_css methods instead, rather than parsing from a string.

See StyleSheet to parse an entire file of multiple rules.

Modules

• container
  The @container rule.
• counter_style
  The @counter-style rule.
• custom_media
  The @custom-media rule.
• document
  The @-moz-document rule.
• font_face
  The @font-face rule.
• font_feature_values
  The @font-feature-values rule.
• font_palette_values
  The @font-palette-values rule.
• import
  The @import rule.
• keyframes
  The @keyframes rule.
• layer
  The @layer rule.
• media
  The @media rule.
• namespace
  The @namespace rule.
• nesting
  The @nest rule.
• page
  The @page rule.
• property
  The @property rule.
• scope
  The @scope rule.
• starting_style
  The @starting-style rule.
• style
  Style rules.
• supports
  The @supports rule.
• unknown
  An unknown at-rule.
• view_transition
  The @view-transition rule.
• viewport
  The @viewport rule.

Structs

• CssRuleList
  A list of CSS rules.
• Location
  A source location.

Enums

• CssRule
  A CSS rule.