FontAwesome 5 overridden by my template

Hello,
my template overrides Easydiscuss rule for FontAwesome 5 with this

.fa {

    font: normal normal normal 14px/1 FontAwesome;}

by investigating the code I have tried putting this in my custom css file

#ed .fa, .far, .fas {

    font-family: "Font Awesome 5 Free" !important;

}

but there must be something wrong (maybe the font family name sholuld be different?) because it causes Easydiscuss to not show all the FontAwesome icons anymore

Can you help me with this?

Thanks