1 | # at-rule-no-vendor-prefix
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2 |
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3 | Disallow vendor prefixes for at-rules.
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4 |
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5 |
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6 | ```css
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7 | @-webkit-keyframes { 0% { top: 0; } }
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8 | /** ↑
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9 | * This prefix */
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10 | ```
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11 |
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12 | ## Options
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13 |
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14 | ### `true`
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15 |
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16 | The following patterns are considered violations:
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17 |
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18 |
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19 | ```css
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20 | @-webkit-keyframes { 0% { top: 0; } }
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21 | ```
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22 |
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23 |
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24 | ```css
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25 | @-ms-viewport { orientation: landscape; }
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26 | ```
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27 |
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28 | The following patterns are _not_ considered violations:
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29 |
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30 |
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31 | ```css
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32 | @keyframes { 0% { top: 0; } }
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33 | ```
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34 |
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35 |
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36 | ```css
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37 | @viewport { orientation: landscape; }
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38 | ```
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