how to use a css file code example
Example 1: how to link your css file to html
<head>
<link rel='stylesheet' href='style.css'>
</head>
Example 2: how to refer to external style sheet
<html>
<head>
<link rel="stylesheet" type="text/css" href="Name.css">
</head>
<body>
.
.
.
</body>