table.charts {
  border-width: 1px;
  border-style: solid;
  border-color: #797979;
  border-spacing: 0px;
  border-collapse: collapse;
  empty-cells:show;
  margin:  0px;
  padding: 0px;
}

table.charts th { 
  border-width: 1px;
  border-style: solid;
  border-color: #808080;
  background: #797979;
  text-align: center;
  margin:  0px;
  padding: 3px;
}

table.charts td {
  border-width: 1px;
  border-style: solid;
  border-color: #797979;
  margin:  0px;
  padding: 3px;
  text-align: center;
}