div.chart {
  position:relative;
  margin:80px;
  width:220px; height:220px;
}
div.chart canvas {
  display: block;
  position:absolute;
  top:0;
  left:0;
}
div.chart span {
  color:#337ab7;
  display:block;
  line-height:220px;
  text-align:center;
  width:220px;
  font-family:sans-serif;
  font-size:40px;
  font-weight:100;
  margin-left:5px;
}