How to import multiple CSS files into a single html file

HTML & CSS
1

[FONT=“Arial Black”]How to import multiple CSS files into a single html file

2 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
  <head>
    <title>Document Title</title>
    <link rel="stylesheet" type="text/css" href="/css/style1.css" media="screen,projection">
    <link rel="stylesheet" type="text/css" href="/css/style2.css" media="screen,projection">
    <link rel="stylesheet" type="text/css" href="/css/style3.css" media="screen,projection">
    <link rel="stylesheet" type="text/css" href="/css/print.css" media="print">
  </head>

or

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
  <head>
    <title>Document Title</title>
    <style type="text/css" media="screen,projection">
      @import url("/css/screen1.css");
      @import url("/css/screen2.css");
      @import url("/css/screen3.css");
    </style>
    <link rel="stylesheet" type="text/css" href="/css/print.css" media="print">
  </head>

or a combination of the two.

3

thank you