woocommerce/plugins/woocommerce-blocks/assets/js/blocks/order-confirmation/shipping-address/style.scss

// Parent element should hide column when there is no address.
.woocommerce-order-confirmation-address-wrapper {
	margin-block-start: $gap-large * 2;

	.wp-block-column:empty {
		display: none;
	}
}

// Prevent margin on the first element in this wrapper.
.wp-block-woocommerce-order-confirmation-shipping-wrapper > *:first-child {
	margin-top: 0;
}
.wp-block-woocommerce-order-confirmation-shipping-wrapper {
	.block-editor-block-list__layout > *:first-child {
		margin-top: 0 !important;
	}
}
.wc-block-order-confirmation-shipping-wrapper {
	.wp-block-heading {
		margin-top: 0;
	}
}
.wc-block-order-confirmation-order-note,
.wc-block-order-confirmation-shipping-address {
	border: 1px solid $universal-border-light;
	border-radius: $universal-border-radius;
	padding: $gap;

	address,
	p {
		width: 100% !important;
		display: block;
		box-sizing: border-box;
		margin: 0;
		font-style: normal;
	}
	p:not(.woocommerce-customer-details--phone) {
		margin: $gap-smaller 0 0;

		strong {
			font-weight: bold;
			display: block;
			&::after {
				content: ":";
			}
		}
	}
}
.wc-block-order-confirmation-order-note {
	margin-top: $gap * 3;

	.wc-block-order-confirmation-order-note__label {
		font-weight: bold;
	}
}