Generated by SassMeister.com.

SassMeister-input.scss

// ----
// libsass (v3.2.5)
// ----

@import 'mq';

test {
  width: 319px / 16px * 1em;
  width: 320px / 16px * 1em - 0.01em;
  
  @include mq(mobile) {
    content: 'mobile and up';
  }
  @include mq($until: mobile) {
    content: 'up to mobile';
  }
}

SassMeister-output.css

test {
  width: 19.9375em;
  width: 19.99em;
}

@media (min-width: 20em) {
  test {
    content: 'mobile and up';
  }
}

@media (max-width: 19.99em) {
  test {
    content: 'up to mobile';
  }
}