.tree-leaf { position: relative; }
.tree-leaf .tree-child-leaves { display: block; margin-left: 15px; }
.tree-leaf .hidden { display: none; }
.tree-leaf .tree-expando { cursor: pointer; float: left; height: 10px; line-height: 10px; font-size: 15px; position: relative; text-align: center; top: 7px; }
.tree-leaf .hidden { visibility: hidden; }
.tree-leaf .tree-leaf-text { cursor: pointer; float: left; margin-left: 5px; }
.tree-leaf .tree-leaf-text:hover { color: blue; }
.tree-leaf .tree-leaf-content:before, .tree-leaf .tree-leaf-content:after { content: " "; display: table; }
.tree-leaf .tree-leaf-content:after { clear: both; }