This can be done with the some CSS code that just needs to be added to the “Custom CSS” textarea on the “Plugin Options” screen of TablePress:

.tablepress-id-N,
.tablepress-id-N tr,
.tablepress-id-N tbody td,
.tablepress-id-N thead th,
.tablepress-id-N tfoot th {
	border: none;
}Code language: CSS (css)

In this code, the N needs to be changed to the ID of the table in question (or use .tablepress as the first part of the selector (five times) to remove the border from all TablePress tables on your site).

If you are still seeing border lines in your table after adding this code, it might be necessary to raise the priority of this command above the commands from e.g. your theme. For that, please change the line with the CSS property to

border: none !important;Code language: CSS (css)