<===> input.scss
div {
  color: #181818;
}

@-webkit-keyframes uiDelayedFadeIn {
	0% { opacity: 0; }
	50% { opacity: .5; }
	100% { opacity: 1; }
}

@-webkit-keyframes bounce {
	from {
		left: 0px;
	}
	to {
		left: 200px;
	}
}

$name: bounce;

@-webkit-keyframes #{$name} {
  blah: blee;
}

@mixin fudge() {
  @content;
}

foo {
  @include fudge() {
    div {
      color: red;
    }
  }
}

<===> output.css
div {
  color: #181818;
}

@-webkit-keyframes uiDelayedFadeIn {
  0% {
    opacity: 0;
  }
  50% {
    opacity: .5;
  }
  100% {
    opacity: 1;
  }
}
@-webkit-keyframes bounce {
  from {
    left: 0px;
  }
  to {
    left: 200px;
  }
}
@-webkit-keyframes bounce {
  blah: blee;
}
foo div {
  color: red;
}

<===> output-dart-sass.css
div {
  color: #181818;
}

@-webkit-keyframes uiDelayedFadeIn {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 0.5;
  }
  100% {
    opacity: 1;
  }
}
@-webkit-keyframes bounce {
  from {
    left: 0px;
  }
  to {
    left: 200px;
  }
}
@-webkit-keyframes bounce {
  blah: blee;
}
foo div {
  color: red;
}