.page-system-event-viewer table tr td,
.page-system-event-viewer table tr th {
    font-size: 0.85em;
    line-height: 1em;
    padding: 4px !important;
}

.page-system-event-viewer table tr td:nth-child(6),
.page-system-event-viewer table tr th:nth-child(6) {
    width: 20%;
}