form {
    margin-bottom: 2ex;
}

table {
    border-collapse: collapse;
    border: 1px solid black;
}

thead {
    border-bottom: 1px solid black;
}

th, td {
    border: 1px solid black;
    padding: 2px 5px;
}

td:last-child {
    text-align: right;
}

input[name='pni-threshold'] {
    text-align: right;
}