¿Cómo aplicarías la fuente "Open Sans" a todos los elementos <h1> con una clase .special?
<h1>
.special
HTML: <link href="https://fonts.googleapis.com/css2?family=Open+Sans" rel="stylesheet"> / CSS: h1.special { font-family: 'Open Sans', sans-serif; }
<link href="https://fonts.googleapis.com/css2?family=Open+Sans" rel="stylesheet">
h1.special { font-family: 'Open Sans', sans-serif; }
HTML: <link href="https://fonts.googleapis.com/css?family=Open+Sans"> / CSS: .special h1 { font-family: 'Open Sans'; }
<link href="https://fonts.googleapis.com/css?family=Open+Sans">
.special h1 { font-family: 'Open Sans'; }
HTML: <link src="https://fonts.googleapis.com/css?family=Open+Sans"> / CSS: h1 { font-family: Open Sans; }
<link src="https://fonts.googleapis.com/css?family=Open+Sans">
h1 { font-family: Open Sans; }
HTML: <link href="https://fonts.googleapis.com/css2?family=Open+Sans" rel="stylesheet"> / CSS: h1 { font-family: Open Sans; }