Generated by SassMeister.com.

SassMeister-input.scss

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

@mixin keyframes($name:test){
  @-webkit-key-frames($name){
    @content;
  }
}

.test {
  @include keyframes{
    from{
      width: 0;
    }
    to{
      width: 10em;
    }
  }
}

.box {
  @include keyframes(box){
    from{
      width: 0;
    }
    to{
      width: 10em;
    }
  }
}

SassMeister-output.css

@-webkit-key-frames test {
  .test from {
    width: 0;
  }
  .test to {
    width: 10em;
  }
}

@-webkit-key-frames box {
  .box from {
    width: 0;
  }
  .box to {
    width: 10em;
  }
}