Font weight not respected - different display in Wappler and browsers

Hello,

I am working on a project and I am puzzled with font-weight.
Project at “my online sandbox” : http://goata.pl/atw-rwd.html

Issue is with the text "“USŁUGI TRANSPORTU DROGOWEGO”
I’ve created a .utg class for this paragraph with a font-weight: 700.

It’s not respected in Design View in Wappler, in Safari, in Chrome … only looks bold and ok in Brave. ( the middle view in screenshot)

Screenshot 2022-09-26 at 11.15.271540×1169 630 KB

Any idea why such differences ?

Any help much appreciated
Cheers