Como vincular o CSS ao HTML
<link rel="stylesheet" href="styles.css">
Unusual Unicorn
<link rel="stylesheet" href="styles.css">
<html>
<head>
<link rel="stylesheet" type="text/css" href="mystyle.css"></link>
</head>
<body>
<link rel="stylesheet" href="PathToYourFile.css">
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" src="style.css">
</head>
<body>
</body>
</html>
<head>
<link href="style.css" rel="stylesheet">
<title>Hello World!!</title>
</head>
<head>
<link rel="stylesheet" href="[name of css file]"
</head>