Hello,
We are using FontAwesome icons. If you want to replace Facebook icon add the following code in custom CSS .fa-facebook-f:before, .fa-facebook:before {content: "\f09a";} Where content is code of icon. For the twitter, instagram etc
.fa-facebook-f:before, .fa-facebook:before {content: "\f09a";}
.fa-twitter:before {content: "\f099";} .fa-instagram:before {content: "\f16d";}
etc
Regards
