build: fix css bundling bug with new esbuild

local testing was being done with an older version of esbuild which
didn't mind @tailwind statements before @imports (it complained, but did
its job). On the latest version used in Docker builds, it would leave
the @import statements intact which broke things like modals.

css/base.css

@@ -1,13 +1,13 @@
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
-
 @import "remixicon.css";
 @import "./modal.css";
 @import "./dark.css";
 @import "./tooltip.css";
 @import "./loader.css";
 
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
 :root {
     --border-width-default: 2px;
     --border-width-2: 3px;