materio-d8/web/themes/custom/materiotheme/assets/styles/mdi/scss/_path.scss

@font-face {
  font-family: '#{$mdi-font-name}';
  src: url('#{$mdi-font-path}/#{$mdi-filename}-webfont.eot?v=#{$mdi-version}');
  src: url('#{$mdi-font-path}/#{$mdi-filename}-webfont.eot?#iefix&v=#{$mdi-version}') format('embedded-opentype'),
    url('#{$mdi-font-path}/#{$mdi-filename}-webfont.woff2?v=#{$mdi-version}') format('woff2'),
    url('#{$mdi-font-path}/#{$mdi-filename}-webfont.woff?v=#{$mdi-version}') format('woff'),
    url('#{$mdi-font-path}/#{$mdi-filename}-webfont.ttf?v=#{$mdi-version}') format('truetype');
  font-weight: normal;
  font-style: normal;
}