MediaWiki:Gadget-BetterReflist.css

.references > li {
	margin-top: 0 !important;
	> .mw-cite-backlink {
		position: absolute;
		margin-top: -2px;
		margin-left: 2px;
	}
	> .mw-cite-backlink:has(>sup) {
		display: inline-block;
		color: transparent;
		margin-top: -8px;
		+ .reference-text:before {
			content: '↑ ';
			position: absolute;
			left: -10px;
			top: -2px;
		}
	}
	> .reference-text {
		display: inline-block;
		vertical-align: top;
		margin-left: 12px;
		position: relative;
	}
}
.references-small {
	margin-top: 13px;
	li {
		margin-bottom: 8px;
	}
	li:has(+li>.mw-cite-backlink>sup) {
		margin-bottom: 15px;
	}
}