/*California Counties*/
    polygon:hover {
        opacity: 0.5;
    }

    .d3-tip {
        width: auto;
        padding: 10px;
        background: rgba(0, 0, 0, 1);
        color: #fff;
        pointer-events: none;
        border-radius: 10px;
    }

        /* Creates a small triangle extender for the tooltip */
        .d3-tip:after {
            box-sizing: border-box;
            display: inline;
            font-size: 10px;
            width: 100%;
            line-height: 0.5;
            color: rgba(0, 0, 0, 0);
            position: absolute;
            pointer-events: none;
        }

        /* Northward tooltips */
        .d3-tip.n:after {
            content: "\25BC";
            margin: -1px 0 0 0;
            top: 100%;
            left: 0;
            text-align: center;
        }

        /* Eastward tooltips */
        .d3-tip.e:after {
            content: "\25C0";
            margin: -4px 0 0 0;
            top: 50%;
            left: -8px;
        }

        /* Southward tooltips */
        .d3-tip.s:after {
            content: "\25B2";
            margin: 0 0 1px 0;
            top: -8px;
            left: 0;
            text-align: center;
        }

        /* Westward tooltips */
        .d3-tip.w:after {
            content: "\25B6";
            margin: -4px 0 0 -1px;
            top: 50%;
            left: 100%;
        }