woocommerce/plugins/woocommerce-admin/client/components/segmented-selection/style.scss

/** @format */

.woocommerce-segmented-selection {
	width: 100%;
	color: $core-grey-dark-500;
}

.woocommerce-segmented-selection__container {
	width: 100%;
	grid-template-columns: 1fr 1fr;
	display: grid;
	border-top: 1px solid $core-grey-light-700;
	border-bottom: 1px solid $core-grey-light-700;
	grid-gap: 1px;
	background-color: $core-grey-light-700;
}

.woocommerce-segmented-selection__label {
	background-color: $core-grey-light-100;
	padding: 12px 12px 12px 24px;
	position: relative;
	display: block;
	height: 100%;

	&:active {
		background-color: $core-grey-light-200;
	}

	&:hover {
		background-color: $core-grey-light-200;
	}
}

.woocommerce-segmented-selection__input {
	opacity: 0;
	position: absolute;
	left: -9999px;

	&:active + label .woocommerce-segmented-selection__label {
		background-color: $core-grey-light-200;
	}

	&:checked + label .woocommerce-segmented-selection__label {
		background-color: $white;

		&::before {
			content: '';
			width: 8px;
			height: 8px;
			background-color: $woocommerce;
			position: absolute;
			top: 50%;
			transform: translate(-16px, -50%);
		}
	}

	&:focus + label .woocommerce-segmented-selection__label {
		/**
		Must use outline instead of border here to avoid having the
		elements below shift by 2 pixel on focus. This trickery is needed
		so that left and right edges can be seen as those borders are actually
		part of the parent CSS grid.
		 */
		outline: 1px solid $black;
		width: calc(100% - 1px);
	}

	&:nth-child(4n + 1):focus + label .woocommerce-segmented-selection__label {
		transform: translateX(1px);
	}
}