stylelint-config-drupal/test/format-exceptions-and-slight-deviations.css

Drupal stylelint configuration

/**
 * @file
 * Format exceptions and slight deviations test.
 *
 * @see https://www.drupal.org/docs/develop/standards/css/css-formatting-guidelines#s-exceptions-and-slight-deviations
 */

/**
 * Large blocks of single declarations can use a slightly different, single-line
 * format. In this case, a space should be included after the opening brace and
 * before the closing brace.
 */
.selector-1 { width: 10%; }
.selector-2 { width: 20%; }
.selector-3 { width: 30%; }

/**
 * Long, comma-separated property values—such as collections of gradients or
 * shadows—can be arranged across multiple lines in an effort to improve
 * readability and produce more useful diffs.
 */
.selector {
  background-image:
    linear-gradient(#fff, #ccc),
    linear-gradient(#f3c, #4ec);
  box-shadow:
    1px 1px 1px #000,
    2px 2px 1px 1px #ccc inset;
}