# How to make a page skeleton?


### The same header for all your pages

When your site will grow, you will have several different services for pages which will often contain the same header information.

A great solution to avoid code copy-pasting of this recurrent information is to make a page skeleton function:

```ocaml
let skeleton body_content =
  Lwt.return
    (html
       (head (title (txt "Page Title")) [])
       (body body_content)))
```
So when you define your pages, you just call this skeleton with the content of the page as an argument:

```ocaml
  Example.register ~service:main
    (fun () () -> skeleton [p [txt "Hello World!"]])
```
This method can also be adapted to add elements on all your pages, like a header, a footer and a menu.

Module `Eliom_tools` has a predefined function for this:

```ocaml
Eliom_tools.D.html
  ~title:"ex"
  ~css:[["css"; "ex.css"]]
  (body [h2 [txt "Welcome to Ocsigen!"]]
```