table.brackets {
    position: relative;
    margin: 10px 11px;
}

table.brackets > tbody > tr > td:first-of-type {
    padding-left: 1px;
    padding-right: 3.5px;
}

table.brackets > tbody > tr > td {
    padding-left: 2.5px;
    padding-right: 5px;
}

table.brackets > tbody > tr > td:last-of-type {
    border-left: 1px solid black;
    padding-left: 5px;
    padding-right: 0;
}

table.brackets:before {
    content: " ";
    position: absolute;
    border-left: 2px solid black;
    border-top: 2px solid black;
    border-bottom: 2px solid black;
    padding: 3px;
    top: -3px;
    bottom: -3px;
    left: -9px;
}

table.brackets:after {
    content: " ";
    position: absolute;
    border-right: 2px solid black;
    border-top: 2px solid black;
    border-bottom: 2px solid black;
    padding: 3px;
    top: -3px;
    bottom: -3px;
    right: -9px;
}