circle {
    fill: #FD8D3C;
    cursor: move;
}

line {
    stroke: #9ECAE1;
    stroke-width: 2px;
}

text {
    fill: white;
    font-family: Ubuntu, sans-serif;
    font-weight: bold;
    text-anchor: middle;
    cursor: move;
}

div.tooltip {
    position: absolute;
    text-align: center;
    padding: 2px;
    font: 12px sans-serif;
    background: lightsteelblue;
    border: 0px;
    border-radius: 8px;
    pointer-events: none;
}