.screenmiddle{
    position: absolute;
    top: 40px;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
}

.getdown{
    margin-top: 55px;
    margin-bottom: 80px;
}

.setmargin{
    margin-bottom: 65px;
}

text {
    font: 10px sans-serif;
    text-anchor: middle;
}

.node--hover circle {
    stroke: #000;
    stroke-width: 1.2px;
}