body {
  background:rgb(225, 206, 0);
  font-family: Arial, Helvetica, sans-serif;
}

div{
  background:rgb(255,0,0);
  padding: rgb(255,206,0);
  width:42px;
  margin:0px;
  margin-left:0px
}

canvas{
  border:1px black solid;
  width:900px;
  height:600px;
  background-color: #1f1f1f;
}

.hidden{
  width:0px;
  height:0px
}