Make Banner color consistent with Button color

Author: fhammerschmidt

src/components/Banner.res

@@ -1,3 +1,3 @@
 @react.component
 let make = (~children) =>
-  <div className="bg-fire-70 text-white text-center text-14 py-3"> children </div>
+  <div className="bg-fire text-white text-center text-14 py-3"> children </div>