Change Fonts for TTR

ttr-fonts-add.php

function trc_custom_fonts($system_fonts) {
  $system_fonts[ '10K Reasons' ] = array(
      'fallback' => 'Verdana, Arial, sans-serif',
      'weights' => array(
          '300',
		  '400',
          '700',
      ),
  );
  return $system_fonts;
}

//Add to Beaver Builder Theme Customizer
add_filter( 'fl_theme_system_fonts', 'trc_custom_fonts' );

//Add to Page Builder modules
add_filter( 'fl_builder_font_families_system', 'trc_custom_fonts' );

ttr-fonts.css

/* Horizon Font */
@font-face {
    font-family: '10K Reasons';
    src: url('fonts/horizon-bold-webfont.woff2') format('woff2'),
         url('fonts/horizon-bold-webfont.woff') format('woff');
    font-weight: 700;
}

@font-face {
    font-family: '10K Reasons';
    src: url('fonts/horizon-light-webfont.woff2') format('woff2'),
         url('fonts/horizon-light-webfont.woff') format('woff');
    font-weight: 300;
}

@font-face {
    font-family: '10K Reasons';
    src: url('fonts/horizon-regular-webfont.woff2') format('woff2'),
         url('fonts/horizon-regular-webfont.woff') format('woff');
    font-weight: 400;
}