.tabla-articulo {
    max-height: 420px;
    background-color: #67615e;
    color: #FFF;
    
    tr {
        display: inline-table;
        table-layout: fixed;
    }

    tbody {
        overflow-y: auto;
        max-height: 280px;
        display: block;
    }

    thead > tr > th {
        line-height: 30px
    }
}