#QEDfloater
{
  float: right;
  margin-left: 10px;
}

#gridContainer
{
  float: right;
}

#grid td
{
  font-size: x-large;
  text-align: center;
  width: 50px;
  height: 50px;
  border-width: thin;
  border-style: solid;
}

#grid td.black
{
  background-color: black;
}

#grid .diagonal
{
  background-color: whitesmoke;
}