woocommerce/plugins/woocommerce-blocks/packages/components/form-step/style.scss

.wc-block-components-form {
	counter-reset: checkout-step;
}

.wc-block-components-form .wc-block-components-checkout-step {
	position: relative;
	border: none;
	padding: 0;
	background: none;
	margin: 0 0 $gap-largest 0;

	.is-mobile &,
	.is-small & {
		padding-left: 0;
		margin-bottom: $gap-larger;

		// The below CSS rules are to show a separator between Checkout steps on mobile.
		// This media query is required because on themes where the Checkout block is rendered alongside something else,
		// e.g. Storefront using the "Default Template" (which has a sidebar) the checkout block can get the `.is-small`
		// class, but the screen itself is larger than 400px.
		@include breakpoint( "<600px" ) {
			padding-top: $gap-larger;

			// Remove padding from the first checkout step. First of type is required here as the first-child is the express payment methods block.
			&:first-of-type {
				padding-top: 0;
			}

			&::after {
				position: absolute;
				content: "";
				// Required because the box shadows are offset by 1px down so we need to move the element up by 1px.
				bottom: calc(1px - $gap-larger);
				width: 100%;
				height: 1px;
				opacity: 0.11;
				background: currentColor;
				// This box-shadow rule creates two visible shadows:
				// - One 50vw to the left of the element.
				// - Another 50vw to the right
				// Both shadows are sharp (no blur) and use the current color of the element.
				// Its purpose is to add a full-width divider between checkout sections which is otherwise impossible as
				// the parent element has padding.
				box-shadow: -50vw 0 0 0 currentColor, 50vw 0 0 0 currentColor;
			}
		}
	}
}

.wc-block-components-checkout-step--disabled {
	opacity: 0.6;
}

.wc-block-components-checkout-step__container {
	position: relative;

	textarea {
		font-style: inherit;
		font-weight: inherit;
	}
}

.wc-block-components-checkout-step__content > * {
	margin-bottom: $gap;

	&:last-child {
		margin-bottom: 0;
	}
}
.wc-block-components-checkout-step--with-step-number .wc-block-components-checkout-step__content > :last-child {
	margin-bottom: 0;
}
.wc-block-checkout__contact-fields .wc-block-components-checkout-step__heading {
	margin-top: em($gap-smaller);
}
.wc-block-components-checkout-step__heading {
	margin: 0 0 $gap-smaller;
	position: relative;

	.wc-block-components-express-payment-continue-rule + .wc-block-components-checkout-step & {
		margin-top: 0;
	}

}

.wc-block-components-checkout-step:first-child .wc-block-components-checkout-step__heading {
	margin-top: 0;
}

.wc-block-components-checkout-step__title {
	margin: 0 $gap-small 0 0;
}

.wc-block-components-checkout-step__heading-content {
	@include font-size(smaller);

	a {
		font-weight: bold;
		color: inherit;
	}
}

.wc-block-checkout__payment-method .wc-block-components-checkout-step__content {
	padding-top: $gap-smaller;
}

.wc-block-components-checkout-step__description {
	@include font-size(small);
	line-height: 1.2;
	margin: 0 0 $gap;
}

.wc-block-checkout__form--with-step-numbers {
	.wc-block-components-checkout-step--with-step-number {
		padding: 0 0 0 $gap-larger;

		.wc-block-components-checkout-step__title::before {
			@include reset-box();
			background: transparent;
			counter-increment: checkout-step;
			content: "\00a0" counter(checkout-step) ".";
			content: "\00a0" counter(checkout-step) "." / "";
			position: absolute;
			left: -$gap-large;
			top: 0;
			text-align: center;
			transform: translateX(-50%);
			white-space: nowrap;

			.is-mobile &,
			.is-small & {
				position: static;
				transform: none;
				left: auto;
				top: auto;
				content: counter(checkout-step) ".\00a0";
				content: counter(checkout-step) ".\00a0" / "";
			}
		}

		.wc-block-components-checkout-step__container::after {
			content: "";
			height: 100%;
			border-left: 1px solid $universal-border-light;
			position: absolute;
			left: -$gap-large;
			top: 0;
		}

		.is-mobile &,
		.is-small & {
			.wc-block-components-checkout-step__title::before {
				position: static;
				transform: none;
				left: auto;
				top: auto;
				content: counter(checkout-step) ".\00a0";
				content: counter(checkout-step) ".\00a0" / "";
			}

			.wc-block-components-checkout-step__container::after {
				content: unset;
			}
		}
	}
}

.editor-styles-wrapper {
	.wp-block h4.wc-block-components-checkout-step__title {
		@include font-size(regular);
		line-height: 24px;
		margin: 0 $gap-small 0 0;
	}
}