Could anyone explain to me why when I set the lang="ar" the font family selects sans-serif font while when it is lang="en" it selects Open Sans.
<html lang="ar">
<head>
<link href="https://fonts.googleapis.com/css?family=Open+Sans|Roboto" rel="stylesheet">
</head>
<body style="font-family: 'Open Sans', sans-serif;">
السلام عليكم
</body>
</html><html lang="en">
<head>
<link href="https://fonts.googleapis.com/css?family=Open+Sans|Roboto" rel="stylesheet">
</head>
<body style="font-family: 'Open Sans', sans-serif;">
السلام عليكم
</body>
</html>