.tree, .tree ul {

    margin:0;

    padding:0;

    list-style:none

}

.tree ul {

    margin-left:1em;

    position:relative

}

.tree ul ul {

    margin-left:.5em

}

.tree ul:before {

    content:"";

    display:block;

    width:0;

    position:absolute;

    top:0;

    bottom:0;

    right:0;

    border-left:1px solid

}

.tree li {

    margin:0;

    padding:0 1em;

    line-height:2em;

    color:#369;

    font-weight:700;

    position:relative;
    font-size: 17px;
    cursor: pointer;

}

.tree ul li:before {

    content:"";

    display:block;

    width:10px;

    height:0;

    border-top:1px solid;

    margin-top:-1px;

    position:absolute;

    top:1em;

    right:0

}

.tree ul li:last-child:before {

    background:#fff;

    height:auto;

    top:1em;

    bottom:0

}

.indicator {

    margin-right:5px;

}

.tree li a {

    text-decoration: none;

    color:#369;

}

.tree li button, .tree li button:active, .tree li button:focus {

    text-decoration: none;

    color:#369;

    border:none;

    background:transparent;

    margin:0px 0px 0px 0px;

    padding:0px 0px 0px 0px;

    outline: 0;

}
.tooltip {
    position: relative;
    display: inline-block;
    border-bottom: 1px dotted black; /* If you want dots under the hoverable text */
}

/* Tooltip text */
.tooltip .tooltiptext {
    visibility: hidden;
    width: 120px;
    background-color: black;
    color: #fff;
    text-align: center;
    padding: 5px 0;
    border-radius: 6px;

    /* Position the tooltip text - see examples below! */
    position: absolute;
    z-index: 1;
}

/* Show the tooltip text when you mouse over the tooltip container */
.tooltip:hover .tooltiptext {
    visibility: visible;
}