woocommerce/plugins/woocommerce-blocks/assets/js/base/components/chip/style.scss

.wc-block-components-chip {
	@include reset-typography();
	align-items: center;
	border: 0;
	display: inline-flex;
	padding: em($gap-smallest) 0.5em;
	margin: 0 0.365em 0.365em 0;
	border-radius: 0;
	line-height: 1;
	max-width: 100%;

	// Chip might be a button, so we need to override theme styles.
	&,
	&:hover,
	&:focus,
	&:active {
		background: transparent;
		color: inherit;
		border: 1px solid;
	}

	&.wc-block-components-chip--radius-small {
		border-radius: 3px;
	}
	&.wc-block-components-chip--radius-medium {
		border-radius: 0.433em;
	}
	&.wc-block-components-chip--radius-large {
		border-radius: 2em;
		padding-left: 0.75em;
		padding-right: 0.25em;
	}
	.wc-block-components-chip__text {
		flex-grow: 1;
		@include font-size(small);
	}
	&.is-removable .wc-block-components-chip__text {
		padding-right: 0.5em;
	}
	.wc-block-components-chip__remove {
		background: $gray-200;
		border: 0;
		border-radius: 25px;
		appearance: none;
		padding: 0;
		height: 16px;
		width: 16px;
		line-height: 16px;
		margin: 0;
	}

	.wc-block-components-chip__remove-icon {
		fill: $gray-900;
	}
}

.theme-twentytwentyone {
	.wc-block-components-chip,
	.wc-block-components-chip:active,
	.wc-block-components-chip:focus,
	.wc-block-components-chip:hover {
		background: #fff;
		button.wc-block-components-chip__remove:not(:hover):not(:active):not(.has-background) {
			background: transparent;
		}
	}
}

button.wc-block-components-chip:hover > .wc-block-components-chip__remove,
button.wc-block-components-chip:focus > .wc-block-components-chip__remove,
.wc-block-components-chip__remove:hover,
.wc-block-components-chip__remove:focus {
	background: $gray-600;

	.wc-block-components-chip__remove-icon {
		fill: #fff;
	}
}

button.wc-block-components-chip:disabled > .wc-block-components-chip__remove,
.wc-block-components-chip__remove:disabled {
	fill: #fff;
	cursor: not-allowed;
}