.tree-leaf {
    position: relative;
    margin:10px 0
}

.tree-leaf .tree-child-leaves {
    display: block;
    margin-left: 25px
}

.tree-leaf .hidden {
    display: none;
    visibility: hidden
}

.tree-leaf .tree-expando {
    background: #ddd;
    border-radius: 2px;
    cursor: pointer;
    float: left;
    width: 20px;
    height: 20px;
    line-height: 20px;
    font-size: 20px;
    position: relative;
    text-align: center;
    top: 0;
}

.tree-leaf .tree-expando:hover {
    background: #aaa
}

.tree-leaf .tree-leaf-text {
    cursor: pointer;
    float: left;
    margin-left: 5px
}

.tree-leaf .tree-leaf-text:hover {
    color: #00f
}

.tree-leaf .tree-leaf-content:after,
.tree-leaf .tree-leaf-content:before {
    content: " ";
    display: table
}

.tree-leaf .tree-leaf-content:after {
    clear: both
}