html, select, input[type=number] {
    font-family: sans-serif;
    font-size: 12pt;
}
select {
    width: 290px;
}
input[type=number] {
    width: 100px;
    text-align: center;
}
footer {
    margin-top: 12pt;
}

.separador {
    height: 5px;
}

#gastos {
    color: red;
}