.tree {
    min-height: 20px;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
}

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

.tree ul ul li:hover {
    background: rgba(0,0,0,.015)
}

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

.tree li:before {
    border-left: 1px solid #999;
    bottom: 50px;
    height: 100%;
    top: -11px;
    width: 1px;
    -webkit-transition: "border-color 0.1s ease 0.1s";
    -moz-transition: "border-color 0.1s ease 0.1s";
    -o-transition: "border-color 0.1s ease 0.1s";
    transition: "border-color 0.1s ease 0.1s"
}

.tree li:after {
    border-top: 1px solid #999;
    height: 20px;
    top: 18px;
    width: 25px
}

.tree li span {
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    border: 1px dotted #999;
    border-radius: 5px;
    display: inline-block;
    padding: 3px 8px;
    text-decoration: none;
    -webkit-transition: color .2s ease .1s,background-color .2s ease .1s,border-color .3s ease .2s;
    -moz-transition: color .2s ease .1s,background-color .2s ease .1s,border-color .3s ease .2s;
    -o-transition: color .2s ease .1s,background-color .2s ease .1s,border-color .3s ease .2s;
    transition: color .2s ease .1s,background-color .2s ease .1s,border-color .3s ease .2s
}

.tree li.parent_li>span {
    cursor: pointer;
    padding: 7px
}

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

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

.tree li.parent_li>span:hover,.tree li.parent_li>span:hover+ul li span {
    background: #eee;
    border: 1px solid #94a0b4;
    color: #000
}

.tree>ul {
    padding-left: 0;
}

.tree ul ul {
    padding-left: 34px;
    padding-top: 10px
}

.tree li.parent_li>span:hover {
    background-color: #DF8505;
    border: 1px solid #C67605;
    color: #fff
}

.tree li.parent_li>span:hover+ul li::before {
    border-left-color: #F89406
}

.tree li.parent_li>span:hover+ul li::after {
    border-top-color: #F89406
}

.tree li.parent_li>span:hover+ul li span {
    background: #FDDFB3!important;
    border: 1px solid #FAA937;
    color: #000
}

.tree .fa.icon-minus-sign:before {
    content: "\f056"!important
}

.tree .fa.icon-plus-sign:before {
    content: "\f055"!important
}