woocommerce/plugins/woocommerce-blocks/packages/components/text-input/style.scss

.wc-block-components-form .wc-block-components-text-input,
.wc-block-components-text-input {
	position: relative;
	margin-top: $gap;
	white-space: nowrap;

	label {
		@include reset-typography();
		@include font-size(regular);
		position: absolute;
		transform: translateY(em($gap));
		line-height: 1.25; // =20px when font-size is 16px.
		left: em($gap-smaller + 1px);
		top: 0;
		transform-origin: top left;
		color: currentColor;
		transition: all 200ms ease;
		margin: 0;
		overflow: hidden;
		text-overflow: ellipsis;
		max-width: calc(100% - #{2 * $gap});
		cursor: text;

		.has-dark-controls & {
			color: $input-placeholder-dark;
		}
		@media screen and (prefers-reduced-motion: reduce) {
			transition: none;
		}
	}

	input[type="number"] {
		-moz-appearance: textfield;
		&::-webkit-outer-spin-button,
		&::-webkit-inner-spin-button {
			appearance: none;
			margin: 0;
		}
	}

	input[type="tel"],
	input[type="url"],
	input[type="text"],
	input[type="number"],
	input[type="email"] {
		@include font-size(regular);
		padding: em($gap);
		line-height: em($gap);
		width: 100%;
		border-radius: $universal-border-radius;
		border: 1px solid $universal-border-light;

		font-family: inherit;
		margin: 0;
		box-sizing: border-box;
		min-height: 0;
		max-height: 50px;
		background-color: #fff;
		color: currentColor;

		&:focus {
			background-color: #fff;
			outline: 0;
			box-shadow: 0 0 0 2px currentColor;
		}

		.has-dark-controls & {
			background-color: $input-background-dark;
			border-color: $input-border-dark;
			color: $input-text-dark;

			&:focus {
				background-color: $input-background-dark;
				color: $input-text-dark;
				box-shadow: 0 0 0 2px $input-border-dark;
			}
		}
	}

	input:-webkit-autofill,
	&.is-active input[type="tel"],
	&.is-active input[type="url"],
	&.is-active input[type="text"],
	&.is-active input[type="number"],
	&.is-active input[type="email"] {
		padding: em($gap + $gap-smaller) em($gap-smaller) em($gap-smaller);
	}

	&.is-active label,
	input:-webkit-autofill + label {
		transform: translateY(25%) scale(0.75);
	}

	&.has-error input {
		&,
		&:hover,
		&:focus,
		&:active {
			border-color: $alert-red;
		}
		&:focus {
			box-shadow: 0 0 0 1px $alert-red;
		}

		.has-dark-controls &,
		.has-dark-controls &:hover,
		.has-dark-controls &:focus,
		.has-dark-controls &:active {
			border-color: color.adjust($alert-red, $lightness: 30%);
		}

		.has-dark-controls &:focus {
			box-shadow: 0 0 0 1px color.adjust($alert-red, $lightness: 30%);
		}
	}

	&.has-error label {
		color: $alert-red;

		.has-dark-controls & {
			color: color.adjust($alert-red, $lightness: 30%);
		}
	}

	&:only-child {
		margin-top: 1.5em;
	}
}