#graph {
    fill: none;
    stroke: red;
    stroke-width: 6;
    opacity: 0.8;
}

#xaxis path,
#xaxis line {
    fill: none;
    stroke: black;
    stroke-width: 2;
    shape-rendering: crispEdges;
}

#xaxis text {
    font-family: sans-serif;
    font-size: 11px;
}

.rrect {
    fill: blue;
    stroke: darkblue;
    stroke-width: 2;
    opacity: 0.4;
}