TreeView/styles.css at master · Wyzix33/TreeView · GitHub

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.tree li {
	list-style-type: none;
	margin: 0;
	padding: 10px 5px 0 5px;
	position: relative;
}

.tree li ul {
	display: none;
}

.tree li .show {
	display: block;
}

.tree li:before, .tree li:after {
	content: '';
	left: -20px;
	position: absolute;
	right: auto;
}

.tree li:before {
	border-left: 1px solid #999;
	bottom: 50px;
	height: 100%;
	top: 0;
	width: 1px;
}

.tree li:after {
	border-top: 1px solid #999;
	height: 20px;
	top: 20px;
	width: 30px;
}

.tree li:last-child:before {
	height: 20px !important;
}

.tree li span {
	display: inline-block;
	padding: 3px 8px;
	text-decoration: none;
	user-select: none;
	font-family: 'Font Awesome 5 Free';
	font-size: 14px;
}

.tree li .plus::before {
	font-weight: 600;
	content: '\f0fe';
	padding-right: 5px;
}

.tree li .minus::before {
	font-weight: 600;
	font-size: 16px;
	content: '\f146';
	padding-right: 5px;
}

.tree > ul > li::before, .tree > ul > li::after {
	border: 0;
}

.tree li:last-child::before {
	height: 30px;
}