1 <!DOCTYPE html PUBLIC
"-//W3C//DTD HTML 4.01//EN">
4 <title>CSS
2.1 Test Suite: At-rules
</title>
5 <link rel=
"help" href=
"http://www.w3.org/TR/CSS21/syndata.html#at-rules">
6 <style type=
"text/css">
9 :unknownpseudo
{ background: red
; }
10 @import
"support/import-green.css";
15 <p class=
"import">This sentence must be green.
</p>