specify css in html for a webpage code example

Example 1: how to link css to html

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

Example 2: CSS IN HTML

<!-- There are 3 ways to do this-->

<!-- #1: Inline CSS-->
<h1 style="color: red;">Red Heading</h1>

<!-- #2 Element CSS-->
<style>
  h1 {
    color: red;
  }
</style>
<h1>Red Heading</h1>

<!-- #3 Stylesheet CSS-->
<link rel="stylesheet" href="[stylesheet link]">