.custom-chart {
    width: 100%;
    height: 100%;
}

.custom-chart area {
  display: block;
  cursor: pointer;
}

.chart-canvas {
    width: 100%;
    height: 100%;
    background-color: #fff;
}

.chart-area-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.custom-chart-tooltip {
    position: fixed;
    display: none;
    background-color: #f0f0f0;
    border: 1px solid #ddd;
    padding: 5px 15px;
    margin-left: -30px;
    border-radius: 10px;
    font-size: 13px;
    z-index: 30000;
}

.custom-chart-tooltip:after {
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 10px solid #f0f0f0;
    content: ' ';
    position: absolute;
    top: 100%;
    left: 50%;
}