div.google-visualization-tooltip {

    padding: 0 !important;
    margin: 0 !important;
    border:none !important;
    box-shadow: unset !important;
    background-color: rgba(0,0,0,0) !important;
    height:auto !important;
    overflow:hidden !important;
    pointer-events: none

}

svg > g:last-child > g:last-child { pointer-events: none }