css applied across all aspx pages in a web app?

I want to use the same css stylesheet in all my aspx pages, is it possible to
link all my pages to one sheet, like somehwere in my webconfig or something?
Currently I am inserting this line in each of my aspx pages: <style
type="text/css" media="screen">@import url(../Styles.css
);</style>

 Also at the top of all my .cs pages I'm using a ton of these using statements
(kept list short for this post):


using System;
using System.Data;
.....

using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls; 

 

Is there some way to apply them across all my .cs pages? In my global.asax or
webconfig? Thanks.

why not use master pages ?

Can you apply the "using" statements across pages created from a
master page?

 And is it easy to implement master pages even though I've already created all
my pages.

Yes master pages are easy.

And you dont need any using statement.

Just create your masterpage

and have your pages inherited from that master pages and thats it.

see:

http://msdn2.microsoft.com/en-us/library/wtxbf3hh.aspx

http://www.odetocode.com/Articles/419.aspx

masterpage