.simple-data-table th {
    border: none;
    background-color: #d7d7d7;
    padding: 5px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
}

.simple-data-table td {
    border: none;
    padding: 0;
}

.simple-data-table input {
    border: 1px solid #d7d7d7;
    display: inline-block;
    padding: 5px;
    font-size: 16px;
}

.simple-data-table tr td:nth-child(3) input,
.simple-data-table tr td:nth-child(4) input {
    text-align: center;
}