<link href='http://fonts.googleapis.com/css?family=Source+Sans+Pro:400,400italic,700&subset=latin,latin-ext' rel='stylesheet' type='text/css'>

<link href='https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,400italic,700&subset=latin,latin-ext' rel='stylesheet' type='text/css'>

Use https for google fonts
Use https for google fonts
