Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.14)
// Compass (v1.0.0)
// ----

@mixin pseudo-elements($el,$el-width,$el-height){
	@if $el == "before" or $el == "after"{
		&:#{$el}{
			content: "";
			position: absolute;
			width: $el-width;
			height: $el-height;
			@content;
		}
	}
	@else {
		@warn "`#{$el}` is not a valid pseudo-element.";
	}
}

//use
.icon-toggle {
  width: 1.56em;
  height: 0.75em;
  position: relative;
  display: inline-block;
  border-top: solid .125em #60666c;

  @include pseudo-elements(before, 1.56em, .125em) {
    background: #888c91;
    top: .25em;
  }
  @include pseudo-elements(after, 1.56em, .125em) {
    background: #afb3b5;
    bottom: 0;
  }
}

SassMeister-output.css

.icon-toggle {
  width: 1.56em;
  height: 0.75em;
  position: relative;
  display: inline-block;
  border-top: solid .125em #60666c;
}
.icon-toggle:before {
  content: "";
  position: absolute;
  width: 1.56em;
  height: 0.125em;
  background: #888c91;
  top: .25em;
}
.icon-toggle:after {
  content: "";
  position: absolute;
  width: 1.56em;
  height: 0.125em;
  background: #afb3b5;
  bottom: 0;
}