section {
	border-width: 0.5rem; /* All of them; easier to see! */

	&:nth-child(1) { border-style: none; }
	&:nth-child(2) { border-style: hidden; }
	&:nth-child(3) { border-style: dotted; }
	&:nth-child(4) { border-style: dashed; }
	&:nth-child(5) { border-style: solid; }
	&:nth-child(6) { border-style: double; }
	&:nth-child(7) { border-style: groove; }
	&:nth-child(8) { border-style: ridge; }
	&:nth-child(9) { border-style: inset; }
	&:nth-child(10) { border-style: outset; }

	/* Every one but the first one. */
	&:not(:first-child) { margin-block-start: 1rem; }
}