встроенный стиль

index.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>New Page</title>
</head>
<body>
<p style="color: #F00; font-size: 50px;">Hello World!</p>
</body>
</html>

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>New Page</title>
</head>
<body>
<p style="color: #F00; font-size: 50px;">Hello World!</p>
</body>
</html>