@mixin one-border($direction: bottom){
	position: relative;

	&::after {
		content: "";
		position: absolute;
		top: 0;
		left: 0;
		width: 200%;
		height: 200%;
		transform: scale(.5);
		transform-origin: 0 0;
		pointer-events: none;
		box-sizing: border-box;
		border-#{$direction}: 1px solid $border-color;
	}
}