table, tr {
    width: auto;
    margin-left: auto;
    margin-right: auto;
}
th {
    border-bottom: 1px;
    border-bottom-style: solid;
}
th, td {
    border-right: none;
    border-bottom: none;
    border-left: 1px;
    border-left-style: solid;
    padding: 2px;
    padding-left: 10px;
    padding-right: 10px;
}
td:first-child, th:first-child {
    border-left: none;
}