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.plas {
  $plasWidth: 14px;
  $plasHeight: $plasWidth;
  $plasColor: grey;
  $plasWeight: 2px;

  display: block;
	width: $plasWidth;
	height: $plasHeight;

	&:before,
	&:after {
		content: '';
		position: absolute;
	}

	&:before {
		border-top: $plasWeight solid $plasColor;
		width: 100%;
		top: 50%;
		transform: translate(0, -50%);
	}

	&:after {
		border-left: $plasWeight solid $plasColor;
		height: 100%;
		left: 50%;
		transform: translate(-50%, 0);
	}
}