Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (vundefined)
// Compass (vundefined)
// dart-sass (v1.18.0)
// ----

@mixin angled-mask($distance:9.5rem, $angle:110deg) {
  mask-image: linear-gradient(#{$angle}, transparent #{$distance}, color('black') #{$distance}, color('black') #{$distance + 0.0625}, transparent 51%);
}

.element {
  &::before {
    content: '';
    // Whatever other Sass is needed.
    @include angled-mask;
  }
}

SassMeister-output.css

.element::before {
  content: "";
  mask-image: linear-gradient(110deg, transparent 9.5rem, color("black") 9.5rem, color("black") 9.5625rem, transparent 51%);
}