import css html header code example
Example 1: external css
<html>
<head>
<link rel="stylesheet" type="text/css" href="mystyle.css"></link>
</head>
<body>
Example 2: how to add css to html
<link rel="stylesheet" href="hi.css">
<html>
<head>
<link rel="stylesheet" type="text/css" href="mystyle.css"></link>
</head>
<body>
<link rel="stylesheet" href="hi.css">