nginx-proxy-manager/frontend/scss/fonts.scss

/* source-sans-pro-regular - latin-ext_latin */
@font-face {
  font-family: 'Source Sans Pro';
  font-style: normal;
  font-weight: 400;
  src: local(''),
       url('../fonts/source-sans-pro/source-sans-pro-v14-latin-ext_latin-regular.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
       url('../fonts/source-sans-pro/source-sans-pro-v14-latin-ext_latin-regular.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
}

/* source-sans-pro-italic - latin-ext_latin */
@font-face {
  font-family: 'Source Sans Pro';
  font-style: italic;
  font-weight: 400;
  src: local(''),
       url('../fonts/source-sans-pro/source-sans-pro-v14-latin-ext_latin-italic.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
       url('../fonts/source-sans-pro/source-sans-pro-v14-latin-ext_latin-italic.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
}

/* source-sans-pro-700italic - latin-ext_latin */
@font-face {
  font-family: 'Source Sans Pro';
  font-style: italic;
  font-weight: 700;
  src: local(''),
       url('../fonts/source-sans-pro/source-sans-pro-v14-latin-ext_latin-700italic.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
       url('../fonts/source-sans-pro/source-sans-pro-v14-latin-ext_latin-700italic.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
}

/* source-sans-pro-700 - latin-ext_latin */
@font-face {
  font-family: 'Source Sans Pro';
  font-style: normal;
  font-weight: 700;
  src: local(''),
       url('../fonts/source-sans-pro/source-sans-pro-v14-latin-ext_latin-700.woff2') format('woff2'), /* Chrome 26+, Opera 23+, Firefox 39+ */
       url('../fonts/source-sans-pro/source-sans-pro-v14-latin-ext_latin-700.woff') format('woff'); /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
}