at-rule-no-vendor-prefix

Disallow vendor prefixes for at-rules.

    @-webkit-keyframes { 0% { top: 0; } }
/**  ↑
 * This prefix */

The fix option can automatically fix all of the problems reported by this rule.

Options

The following patterns are considered violations:

@-webkit-keyframes { 0% { top: 0; } }

@-ms-viewport { orientation: landscape; }

The following patterns are not considered violations:

@keyframes { 0% { top: 0; } }

@viewport { orientation: landscape; }