Tryit Editor v1.8

Source Code:

<!DOCTYPE html>
<html>
<head>
<style>
body
{
color:green;
}
</style>
</head>
<body>

<h1>Hello world!</h1>
<p>This is some text.</p>
<p><a href="http://www.w3schools.com">Visit W3Schools.com!</a></p>

</body>
</html>

Result:

W3Schools.com - Try it yourself

Edit the code above and click "Submit Code" to see the result.