Need to turn off biome noUnknownAtRules for tailwind v4 biomejs/biome#7164

Author: nedtwigg

browser-extension/biome.json

@@ -66,6 +66,7 @@
           }
         },
         "noExplicitAny": "off",
+        "noUnknownAtRules": "off",
         "noVar": "error"
       }
     }