#art {
  display: table;
  border-spacing: 1px;
  background-color: black;
  border: 5px solid black;
}  
.row {
  display: table-row;
}
.pixel {
  display: table-cell;
  background-color:white;
  width: 40px;
  height: 40px;
}
.pen {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 2px solid black;
}
body {
	font-family: Helvetica, sans-serif;
}