table.rates, table.costs {
    border:solid;
    border-width:thin;
    border-collapse: collapse;
    text-align:center;
    margin: 10px;   
}

table.rates td, table.costs td {
    border:solid;
    border-width:thin;
    padding: 5px;
}

table.inputs {
    border:none;
    text-align:center;
    margin: 10px;   
}

table.inputs td {
    border:none;
    padding: 5px;
}

td.period
{
    text-align: left;
}