.bar {
  fill: steelblue;
}

.bar:hover {
  fill: brown;
}

.axis {
  font: 10px sans-serif;
}

.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

.x.axis path {
  display: none;
}

#svgdataurl {
    display: none;
}
#pngdataurl {
    display: none;
}
hidden {
    display: none;
}

h3.error, h4.error {
    color: red;
}

.error {
    text-align: left;
}