how to put css directly into html code example

Example 1: how to link css to html

<link rel="stylesheet" href="file_name.css">

Example 2: how to add css to html

<link rel="stylesheet" href="hi.css">

Example 3: how to add css in html

/*
adding css without a css file
*/

/*
in head add
*/

<style>
	/* put in your normal css*/
</style>