Remove all borders on a specific datatable

Question

I need to hide all borders of one datatable, not all, using PrimeFaces. I have tried many things and no one has worked. Does anyone know how to do it?

I have applied the

Answer 1

with JSF 2, PrimeFaces 3.5

css:

.borderless .ui-datatable thead th,
.borderless .ui-datatable tbody,
.borderless .ui-datatable tbody tr,
.borderless .ui-datatable tbody td {
    border: none;
    display: none;
}

for datatable header:

.borderless .ui-state-default,
.borderless .ui-widget-content .ui-state-default,
.borderless .ui-widget-header .ui-state-default {
    border: none;
}