luceos Hello, it works. However fa fab icon cant not be shown, when I used { font-family: "Font Awesome 5 Free"; font-weight: 900; content: "\f1c9"; } however if I change \f1c9 to "\123", it shows the icon, the f1c9 is the type of fab icon, could you mind let us know how the fontawsome works in flarum? I see the way you use the composer, however, the files are different with the official sites, and I check the css link in your header, that is a totall different case, I am confused now, could you mind let us know how it works in general?
