Hi

I recommend visiting richinstyle.com and going through the masterclass.

what you can do

.tableChild, .caracterType, .numericType{
boder-botton: 1px solid black;
font-family: Arial. helvetica, sans-serif;
}

.caracterType{
text-align: right;
}

.numericType{
text-align: left;
}

but obviously you need to know all the types initially.

or

.tableChild {
boder-botton: 1px solid black;
font-family: Arial. helvetica, sans-serif;
}

.tableChild caracterType{
text-align: right;
}

.tableChild numericType{
text-align: left;
}

where you would only use .caracterType or .numericType within something using .tableChild - a div or a table would be typical examples.