table {
    border-collapse: collapse;
}

td, th {
  text-align: center;
  border: 1px solid black;
}

.tdthClean {
  border-top: 1px solid transparent;
  border-bottom: 1px solid transparent;
  width: 20px;
}

.tableCenter {
  margin-left: auto;
  margin-right: auto;
}

.captionCenter{
  text-align: center;
}