/* stacked area */
.nvd3.nv-stackedarea path.nv-area {
    fill-opacity: .7;
    stroke-opacity: 0;
    transition: fill-opacity 250ms linear, stroke-opacity 250ms linear;
}

.nvd3.nv-stackedarea path.nv-area.hover {
    fill-opacity: .9;
}


.nvd3.nv-stackedarea .nv-groups .nv-point {
    stroke-opacity: 0;
    fill-opacity: 0;
}