src/third_party/web_platform_tests/conformance-checkers/html-aria/_functional/tree/css/treebox.css

/* variant of treesimple.css, that adds slightly more complex styling. */

html, body {
	color:#333;
	background-color:#fff;
	font-family:"helvetica neue", arial, helvetica, sans-serif;
	font-size:12px;
	line-height:1.4em;
}
h1{
	font-size:14px;
}
[role="tree"]{
	border:solid 1px #000;
	width:300px; /* hardcoded for example */
	cursor:default;
}
ul[role="tree"], [role="tree"] li, [role="tree"] ul {
	display:block;
	list-style:none;
	margin:0;
	padding:0;
}
li[role="treeitem"] {
	position:relative;
}

[role="treeitem"] > span{ display:block; }

/* looks kinda redundant, but is necessary to get the full left bleed on sub-level items */
[role="treeitem"] > span{ padding-left:15px; }
[role="treeitem"] [role="treeitem"] > span{ padding-left:30px; }
[role="treeitem"] [role="treeitem"] [role="treeitem"] > span{ padding-left:45px; }
[role="treeitem"] [role="treeitem"] [role="treeitem"] [role="treeitem"] > span{ padding-left:60px; }
[role="treeitem"] [role="treeitem"] [role="treeitem"] [role="treeitem"] [role="treeitem"] > span{ padding-left:75px; }

.expander {
	display:block;
	position:absolute;
	left:2px;
	top:0.3em;
	width:9px;
	height:9px;
	background:transparent url(./img/expander.gif) -9px 0 no-repeat;
}
[aria-expanded="false"] > * > .expander {
	background-position:0 0;
}
[role="treeitem"] [role="treeitem"] .expander { left:17px; }
[role="treeitem"] [role="treeitem"] [role="treeitem"] .expander { left:32px; }
[role="treeitem"] [role="treeitem"] [role="treeitem"] [role="treeitem"] .expander { left:47px; }
[role="treeitem"] [role="treeitem"] [role="treeitem"] [role="treeitem"] [role="treeitem"] .expander { left:62px; }


[aria-expanded="false"] [role="group"] {
	display:none;
}
[role="tree"] .activedescendant > span {
	background-color:#ccc;
}
[role="tree"]:focus .activedescendant > span {
	color:#fff;
	background-color:#03c;
}