styles.alv.cx/modules/buttonlist.css

.buttonlist {
	border-left: 1px solid #b3b3b3;
	padding-left: 0.5em;
	margin-left: 0.5em;
}

.buttonlist li {
	list-style: none;
	margin: 0;
}

.buttonlist li a {
	color: var(--fg);
	text-decoration: none;
	width: 100%;
}
.buttonlist li > * * {
	color: var(--fg);
	width: 100%;
	margin: 0;
	padding: 0.75em;
	transition: 0.5s;
	box-sizing: border-box;
}

.buttonlist li > a:hover * {
	background: var(--bg);
	color: var(--fg);
	filter: brightness(0.75);
}