.c3-axis {
    fill: #9aa0ac;
}

.c3-axis line, .c3-axis path {
    stroke: #7b808a;
}

.c3-tooltip {
    opacity: 1;
}

.c3-tooltip tr {
    border-left: none;
    border-right: none;
}

.c3-tooltip td.name {
    border-left: none;
}