d3pie.css

.d3pie .chart-title {
    font-family: Arial, sans-serif;
    font-size: 24px;
    text-anchor: middle;
}
.d3pie-tooltip {
    pointer-events: none;
    position: absolute;
    padding: 5px;
    color: white;
    background-color: rgb(0 0 0 /50%);
    border-radius: 4px;
    opacity: 0;
    line-height: normal;
}

.d3pie .total-text {
    text-anchor: middle;
    dominant-baseline: central;
}
.d3pie .total-value {
    font-family: Arial, sans-serif;
}

.d3pie .inner-label {
    fill: #eeeeee;
    pointer-events: none;
    text-anchor: middle;
}

/* pie placeholder */
.d3pie .slice-g:first-of-type .inner-label {
    fill: #cccccc;
}
.d3pie defs radialGradient:first-of-type stop {
    stop-opacity: 0.1;
}

/* gradient color */
.d3pie .grad-stop-1 {
    stop-color: black;
}

.outer-label-g {
    opacity: 0;
}
.link {
    fill: none;
}