Testing load of style_avh.css stylesheet from my cdn.
Result: FAILS.
It may be that AWS is blocking fonts to prevent cross-site scripting issues This may explain why relative referencing within the website works but FQDNs fails.
Source: cdn.hefer.org.uk/icomoon/css Style: all.min.css
Replace span with div and use font-awesome classes.
Vanilla iconmoon styling with pgt-yellow icon colours.