body {
  display: flex;
  align-content: center;
  justify-content: center;
  font-family: Arial, sans-serif;
}
.App {
  width: 400px;
  display: flex;
  flex-direction: column;
}
.App table {
  width: 100%;
  table-layout: fixed;
  empty-cells: hide;
}
td {
  border: 1px solid #ccc;
}
.input {
  display: flex;
  justify-content: center;
  flex-direction: column;
}