样式表不适用于使用chi路由器的go html模板

I am working on a Go Web Application with the following project structure:

  • ui
    • templates
      • login.tmpl
    • static
      • css
        • theme.css
  • main.go

My main.go code (only showing relevant parts for brevity). I am using chi router.

func main() {

    r := chi.NewRouter()

    var templates *template.Template
    templates = template.Must(template.ParseGlob("ui/templates/*.tmpl"))

    fileServer := http.FileServer(http.Dir("./ui/static/"))


    r.Handle("/static/", http.StripPrefix("/static/", fileServer))

    log.Fatal(http.ListenAndServe(":8080", r))
}

login.tmpl code for including css:

<head>
    <link rel="stylesheet" href="/static/css/theme.css">
</head>

Problem:

When this code runs, the html generates ok but the css is not applied to the page. In Chrome console, I see this error:

Refused to apply style from 'http://localhost:8080/static/css/theme.css' because its MIME type ('text/plain') is not a supported stylesheet MIME type, and strict MIME checking is enabled.

When using the chi router you have to use the * wildcard character at the end of the pattern to make the file server work.

r.Handle("/static/*", http.StripPrefix("/static/", fileServer))

https://github.com/go-chi/chi/blob/master/_examples/fileserver/main.go