internal style sheet in html code example
Example 1: how to link your css file to html
<head>
<link rel='stylesheet' href='style.css'>
</head>
Example 2: how to add css to html
<link rel="stylesheet" href="hi.css">
<head>
<link rel='stylesheet' href='style.css'>
</head>
<link rel="stylesheet" href="hi.css">