Try this:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">_x000D_
<html xmlns="http://www.w3.org/1999/xhtml">_x000D_
<head>_x000D_
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />_x000D_
<title>Untitled Document</title>_x000D_
<style type="text/css">_x000D_
.OutlineText {_x000D_
font: Tahoma, Geneva, sans-serif;_x000D_
font-size: 64px;_x000D_
color: white;_x000D_
text-shadow:_x000D_
/* Outline */_x000D_
-1px -1px 0 #000000,_x000D_
1px -1px 0 #000000,_x000D_
-1px 1px 0 #000000,_x000D_
1px 1px 0 #000000, _x000D_
-2px 0 0 #000000,_x000D_
2px 0 0 #000000,_x000D_
0 2px 0 #000000,_x000D_
0 -2px 0 #000000; /* Terminate with a semi-colon */_x000D_
}_x000D_
</style></head>_x000D_
_x000D_
<body>_x000D_
<div class="OutlineText">Hello world!</div>_x000D_
</body>_x000D_
</html>
_x000D_
...and you might also want to do this too:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">_x000D_
<html xmlns="http://www.w3.org/1999/xhtml">_x000D_
<head>_x000D_
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />_x000D_
<title>Untitled Document</title>_x000D_
<style type="text/css">_x000D_
.OutlineText {_x000D_
font: Tahoma, Geneva, sans-serif;_x000D_
font-size: 64px;_x000D_
color: white;_x000D_
text-shadow:_x000D_
/* Outline 1 */_x000D_
-1px -1px 0 #000000,_x000D_
1px -1px 0 #000000,_x000D_
-1px 1px 0 #000000,_x000D_
1px 1px 0 #000000, _x000D_
-2px 0 0 #000000,_x000D_
2px 0 0 #000000,_x000D_
0 2px 0 #000000,_x000D_
0 -2px 0 #000000, _x000D_
/* Outline 2 */_x000D_
-2px -2px 0 #ff0000,_x000D_
2px -2px 0 #ff0000,_x000D_
-2px 2px 0 #ff0000,_x000D_
2px 2px 0 #ff0000, _x000D_
-3px 0 0 #ff0000,_x000D_
3px 0 0 #ff0000,_x000D_
0 3px 0 #ff0000,_x000D_
0 -3px 0 #ff0000; /* Terminate with a semi-colon */_x000D_
}_x000D_
</style></head>_x000D_
_x000D_
<body>_x000D_
<div class="OutlineText">Hello world!</div>_x000D_
</body>_x000D_
</html>
_x000D_
You can do as many Outlines as you like, and there's enough scope for coming up with lots of creative ideas.
Have fun!