.vertical_label {
    -webkit-transform: rotate(-90deg);
       -moz-transform: rotate(-90deg);
        -ms-transform: rotate(-90deg);
         -o-transform: rotate(-90deg);
            transform: rotate(-90deg);
              color: #000
              font-size: 22px;
              height: 50px;
              width: 100px;
    float: left; 
}

.chart {

}

.main text {
    font: 10px sans-serif;	
}

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

circle {
    fill: steelblue;
}