.matrix-grid {
    text-align: center;
}
.matrix-grid table {
    width: auto !important;
    margin: 0 auto !important;
    border-collapse: collapse !important;
}
.matrix-grid th, .matrix-grid td {
    width: 30px !important;
    min-width: 30px !important;
    max-width: 30px !important;
    height: 30px !important;
    padding: 0 !important;
    text-align: center !important;
    vertical-align: middle !important;
    font-size: 0.85em !important;
    border: 1px solid #ccc !important;
}