_variable.scss

$inter-font-display: swap !default;
$inter-font-suffix: '' !default;
$inter-font-path: 'variable' !default;
$inter-font-path-suffix: '?v=4.0' !default;

@mixin normal {
  @font-face {
    font-family: 'InterVariable';
    font-weight: 100 900;
    font-style: normal;
    font-named-instance: 'Regular';
    font-display: $inter-font-display;
    src: url("#{$inter-font-path}/InterVariable#{$inter-font-suffix}.woff2#{$inter-font-path-suffix}") format("woff2 supports variations(gvar)"),
    url("#{$inter-font-path}/InterVariable#{$inter-font-suffix}.woff2#{$inter-font-path-suffix}") format("woff2-variations"),
    url("#{$inter-font-path}/InterVariable#{$inter-font-suffix}.woff2#{$inter-font-path-suffix}") format("woff2");
  }
}

@mixin italic {
  @font-face {
    font-family: 'InterVariable';
    font-weight: 100 900;
    font-style: italic;
    font-named-instance: 'Italic';
    font-display: $inter-font-display;
    src: url("#{$inter-font-path}/InterVariable-Italic#{$inter-font-suffix}.woff2#{$inter-font-path-suffix}") format("woff2 supports variations(gvar)"),
    url("#{$inter-font-path}/InterVariable-Italic#{$inter-font-suffix}.woff2#{$inter-font-path-suffix}") format("woff2-variations"),
    url("#{$inter-font-path}/InterVariable-Italic#{$inter-font-suffix}.woff2#{$inter-font-path-suffix}") format("woff2");
  }
}

@mixin default {
  /* -------------------------------------------------------
  Variable font.
  Usage:

    html { font-family: 'Inter', sans-serif; }
    @supports (font-variation-settings: normal) {
      html { font-family: 'InterVariable', sans-serif; }
    }
  */

  @include normal;
  @include italic;
}

@mixin all {
  @include default;
}