table.greyGridTable {
    border: 2px solid #FFFFFF;
    width: auto;
    text-align: center;
    border-collapse: collapse;
    border: 3px solid black;
    margin: auto;
  }
  table.greyGridTable td, table.greyGridTable th {
    border: 1px solid #FFFFFF;
    padding: 3px 4px;
  }
  table.greyGridTable tbody td {
    font-size: 1.1em;
    height: 60px;
    width: 60px;
  }
  table.greyGridTable td:nth-child(even) {
    background: #EBEBEB;
  }
  table.greyGridTable thead {
    background: #FFFFFF;
    border-bottom: 4px solid #333333;
  }
  table.greyGridTable thead th {
    font-size: 15px;
    font-weight: bold;
    color: #333333;
    text-align: center;
    border-left: 2px solid #333333;
  }
  table.greyGridTable thead th:first-child {
    border-left: none;
  }
  
  table.greyGridTable tfoot {
    font-size: 14px;
    font-weight: bold;
    color: #333333;
    border-top: 4px solid #333333;
  }
  table.greyGridTable tfoot td {
    font-size: 14px;
  }
input{
    height: 98%;
    width: 98%;
    font-size: 1.4em;
    text-align: center;
}