+++ /dev/null
-# at-rule-no-vendor-prefix
-
-Disallow vendor prefixes for at-rules.
-
-```css
- @-webkit-keyframes { 0% { top: 0; } }
-/** ↑
- * These prefixes */
-```
-
-## Options
-
-### `true`
-
-The following patterns are considered violations:
-
-```css
-@-webkit-keyframes { 0% { top: 0; } }
-```
-
-```css
-@-ms-viewport { orientation: landscape; }
-```
-
-The following patterns are *not* considered violations:
-
-```css
-@keyframes { 0% { top: 0; } }
-```
-
-```css
-@viewport { orientation: landscape; }
-```