form#quadrat {
  text-align:center;
}

input.zahlen {
  background-color:#ffffff;
  border:0;
  color:#6e7d9a;
  font-weight:bold;
  height:20px;
  margin:5px;
  padding:2px 0 0 0;
  text-align:center;
  width:22px;
}

ol li img {
  margin:10px 0 10px 20px;
}

table {
  border:3px solid #6e7d9a;
  border-collapse:collapse;
  margin:0 auto;
}

td {
  border:1px solid #6e7d9a;
  cursor:text;
  height:40px;
  text-align:center;
  width:40px;
}

tr {
  vertical-align:middle;
}