AMP Font Awesome Custom CSS

fontawesome.css

@font-face {
  font-family: 'FontAwesome';
    src: url('<?php echo get_template_directory_uri(); ?>/include/fonts/fontawesome-webfont.eot?v=4.7.0');
    src: url('<?php echo get_template_directory_uri(); ?>/include/fonts/fontawesome-webfont.eot?#iefix&v=4.7.0') format('embedded-opentype'), url('<?php echo get_template_directory_uri(); ?>/include/fonts/fontawesome-webfont.woff?v=4.7.0') format('woff'), url('<?php echo get_template_directory_uri(); ?>/include/fonts/fontawesome-webfont.ttf?v=4.7.0') format('truetype'), url('<?php echo get_template_directory_uri(); ?>/include/fonts/fontawesome-webfont.svg?v=4.7.0#fontawesomeregular') format('svg');
    font-weight: normal;
    font-style: normal;
}
.fa {
    display: inline-block;
    font-family: FontAwesome;
    font-style: normal;
    font-weight: normal;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.fa-facebook:before {
    content: "\f09a";
}
.fa-twitter:before {
    content: "\f099";
}
.fa-google-plus:before {
    content: "\f0d5";
}
.fa-get-pocket:before {
  content: "\f265";
}
.fa-clock-o:befer {
  content: "\f017";
}
.fa-folder-open-o:before {
  content: "\f115";
}
.fa-tags:before {
  content: "\f02c";
}

fontawesome.scss

@font-face {
  font-family: 'FontAwesome';
    src: url('<?php echo get_template_directory_uri(); ?>/include/fonts/fontawesome-webfont.eot?v=4.7.0');
    src: url('<?php echo get_template_directory_uri(); ?>/include/fonts/fontawesome-webfont.eot?#iefix&v=4.7.0') format('embedded-opentype'), url('<?php echo get_template_directory_uri(); ?>/include/fonts/fontawesome-webfont.woff?v=4.7.0') format('woff'), url('<?php echo get_template_directory_uri(); ?>/include/fonts/fontawesome-webfont.ttf?v=4.7.0') format('truetype'), url('<?php echo get_template_directory_uri(); ?>/include/fonts/fontawesome-webfont.svg?v=4.7.0#fontawesomeregular') format('svg');
    font-weight: normal;
    font-style: normal;
}
.fa {
    display: inline-block;
    font-family: FontAwesome;
    font-style: normal;
    font-weight: normal;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.fa-facebook:before {
    content: "\f09a";
}
.fa-twitter:before {
    content: "\f099";
}
.fa-google-plus:before {
    content: "\f0d5";
}
.fa-get-pocket:before {
  content: "\f265";
}
.fa-clock-o:befer {
  content: "\f017";
}
.fa-folder-open-o:before {
  content: "\f115";
}
.fa-tags:before {
  content: "\f02c";
}