Place all the rules inside of a pair of opening and closing <style> tags, which are then placed inside of the opening and closing <head> tags of the HTML file
<head>
<style>
div {
color: white;
background-color: black;
}
p {
color: red;
}
</style>
</head>
<body>
...
</body>Rationale
- For adding unique styles to a single page of a website
Related: External CSS, Inline CSS