.is-layout-flow,
.is-layout-constrained {

	> * {
		margin-block-start: 0;
		margin-block-end: var(--content-spacing);

		&:last-child {
			margin-block-end: 0;
		}
	}

	h1, h2, h3, h4, h5, h6 {
		margin-block-start: var(--content-spacing);
		margin-block-end: calc(var(--has-content-spacing, 1) * (0.3em + 10px));

		&:first-child {
			margin-block-start: 0;
		}
	}
}