Module adds helpers for font-awesome icons(http://fontawesome.io/icons/) Before useing ensure that you included in app.html styles for countries flags:

stylesheet(“https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.css”)

For custom styling it use defined class with overloaing styles located after cdn styles;

Example:

iex> fa_icon(‘my_icon’)