.tree ul {
    padding-top: 20px; position: relative;
    transition: all 0.5s;
    display: flex;
    justify-content: center;
}

.tree li {
    float: left; text-align: center;
    list-style-type: none;
    position: relative;
    padding: 20px 5px 0 5px;
}

/* Garis penghubung */
.tree li::before, .tree li::after{
    content: '';
    position: absolute; top: 0; right: 50%;
    border-top: 2px solid #ccc;
    width: 50%; height: 20px;
}
.tree li::after{
    right: auto; left: 50%;
    border-left: 2px solid #ccc;
}

.tree li:only-child::after, .tree li:only-child::before {
    display: none;
}

.tree li:only-child{ padding-top: 0;}

.tree li:first-child::before, .tree li:last-child::after{
    border: 0 none;
}
.tree li:last-child::before{
    border-right: 2px solid #ccc;
    border-radius: 0 5px 0 0;
}
.tree li:first-child::after{
    border-radius: 5px 0 0 0;
}

.tree ul ul::before{
    content: '';
    position: absolute; top: 0; left: 50%;
    border-left: 2px solid #ccc;
    width: 0; height: 20px;
}

/* Kotak Nama Anggota */
.tree .member {
    border: 2px solid #ccc;
    padding: 10px;
    display: inline-block;
    border-radius: 5px;
    background-color: white;
    font-family: Arial, sans-serif;
    font-size: 14px;
}

.tree .member:hover, .tree .member:hover+ul li .member {
    background: #eef; border: 2px solid #94a0b4;
}