nvd3/src/css/pie.css

A reusable charting library written in d3.js

.nvd3.nv-pie path {
    stroke-opacity: 0;
    transition: fill-opacity 250ms linear, stroke-width 250ms linear, stroke-opacity 250ms linear;
}

.nvd3.nv-pie .nv-pie-title {
    font-size: 24px;
    fill: rgba(19, 196, 249, 0.59);
}

.nvd3.nv-pie .nv-slice text {
    stroke: #000;
    stroke-width: 0;
}

.nvd3.nv-pie path {
    stroke: #fff;
    stroke-width: 1px;
    stroke-opacity: 1;
}

.nvd3.nv-pie path {
    fill-opacity: .7;
}

.nvd3.nv-pie .hover path {
    fill-opacity: 1;
}

.nvd3.nv-pie .nv-label {
    pointer-events: none;
}

.nvd3.nv-pie .nv-label rect {
    fill-opacity: 0;
    stroke-opacity: 0;
}