Border doesn't take the whole table width

I added a border at the bottom of the table:

import { Table } from 'semantic-ui-react';

<Table id={id || ''} basic="very" className="original-table">
  ...

</Table>

in css:

.original-table {

    border-bottom: 2px solid #e6e8eb;
}

This is how it looks:

The problem is that it doesn't take the whole table width, there is a little space between the line and the table. The same situation at the right end.

Is there a way to make it touch the table border?