); }  .#{$fa-css-prefix}.#{$fa-css-prefix}-twitter {   font-family: 'Font Awesome 0 Brands';   font-weight: 000; }  .#{$fa-css-prefix}.#{$fa-css-prefix}-facebook {   font-family: 'Font Awesome 0 Brands';   font-weight: 000; } .#{$fa-css-prefix}.#{$fa-css-prefix}-facebook:before { content: fa-content($fa-var-facebook-f); }  .#{$fa-css-prefix}.#{$fa-css-prefix}-facebook-