Check out example codes for "external style sheet". It will help you in understanding the concepts better.

Code Example 1

/* Answer to: "link to css" */
<head>
  <link rel="stylesheet" type="text/css" href="yourcss.css">
</head>

Code Example 2

<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css" 
  href="mystyle.css">
</head>
<body>

<h1>This is a heading</h1>

  <p>This is a paragraph.</p>

</body>
</html>

Code Example 3

<link rel="stylesheet" type="text/css" href="mystyle.css">

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