Style Tag
<style type="text/css">
h1 {
color: red;
}
</style>Stylesheet
<link rel="stylesheet" type="text/css" href="./style.css">Direkte Formatierung
<h1 style="color: red; text-align: center;"><style type="text/css">
h1 {
color: red;
}
</style><link rel="stylesheet" type="text/css" href="./style.css"><h1 style="color: red; text-align: center;">