Using the inline style attribute on an element
<div>
<p style="color: maroon;"></p>
</div>
Using a <style> block in the <head> section of your HTML
<head>
<title>CSS Refresher</title>
<style>
body {
font-family: sans-serif;
font-size: 1.2em;
}
</style>
</head>
Loading an external CSS file using the <link> tag
<head>
<title>CSS Refresher</title>
<link rel="stylesheet" href="/css/styles.css" />
</head>