@mixin link($color) {
	color: $color;
	font-size: 1em;
	text-decoration: none;
	position: relative;
	display: inline-block;
	padding-bottom: 4px;
	&:after {
		bottom: 0;
		content: "";
		display: block;
		left: 50%;
		height: 2px;
		position: absolute;
		background: $color;
		@include transition(all .3s ease-in-out);
		width: 0;
	}
	&:hover:after {
		width: 100%;
		left: 0;
	}
}