#customers {
    font-family: Arial, Helvetica, sans-serif;
    border-collapse: collapse;
    width: 100%;
}

#customers td, #customers th {
    border: 1px solid #ddd;
    padding: 5px;
}

#customers td {
    font-size: small;
}

#customers tr:nth-child(even){background-color: #f2f2f2;}

#customers tr:hover {background-color: #ddd;}

#customers th {
    padding-top: 12px;
    padding-bottom: 12px;
    text-align: left;
    background-color: #0a5400;
    color: white;
}

#th-codigo {
    width: 15%;
}

#th-desc {
    width: 65%;
}

#th-res {
    width: 20%;
}