Class What it does?
table--styled Displays a bordered and striped table. This table uses this class.
table--bordered Displays a bordered table.
table--striped Displays a striped table.
table--centered Centers the contents of the table.
table--hoverable Adds a background color when a row is hovered.

To center a specific row or table cell and not the whole the table, use the is-centered class from the text component.