Font files are present in this project for anyone who might need them, but Google Fonts serve them as well.
<link href="https://fonts.googleapis.com/css2?family=Source+Sans+Pro:wght@400;600;700&display=swap" rel="stylesheet">@import url('https://fonts.googleapis.com/css2?family=Source+Sans+Pro:wght@400;600;700&display=swap');- assets cleanup
- documentation