wp-calypso/client/my-sites/checkout/src/components/vat-form/style.scss

/* Defaults to 2 col grid on larger viewports
 * Collapses to 1 col grid on smaller viewports
 * Use .vat-form__row--full-width class to force a 1 col grid
 * across all viewports
 */
.vat-form__row {
	display: -ms-grid;
	display: grid;
	width: 100%;
	-ms-grid-columns: 48% 4% 48%;
	grid-template-columns: 48% 48%;
	grid-column-gap: 4%;
	justify-items: stretch;
	margin-top: 16px;

	@include breakpoint-deprecated( "<660px" ) {
		display: block;

		> div:not(:first-child) {
			margin-block-start: 16px;
		}
	}

	// Override the InputWrapper styles for the VAT ID field
	label[for="contact-vat-id"] + div {
		border: 1px solid #C3C4C7;
	}

	& .field__overlay-prefix {
		display: flex;
		flex: 0 0 auto;
		justify-content: center;
		align-items: center;
		align-self: stretch;
		white-space: nowrap;
		min-width: 3.5rem;
		min-height: 100%;
		line-height: 1.5;
		font-size: 0.875rem;
		color: var(--studio-gray-60);
		box-sizing: border-box;
		border-right: 1px solid #C3C4C7;
	}

	& #contact-vat-id {
		border: none;
		min-width: 0;
		&:focus {
			outline: unset;
		}
	}
}

.vat-form__row--full-width {
	display: block;
}

.vat-form__row input[type="checkbox"]:disabled {
	opacity: 0.5;
}

.is-section-checkout .components-checkbox-control__input[type="checkbox"]:checked {
	--wp-admin-theme-color: var(--studio-wordpress-blue-50);
}