Basic table

Documentation and examples for opt-in styling of tables (given their prevelant use in JavaScript plugins) with Bootstrap 4 can be found here
# First Name Last Name Username
1 Mark Otto @mdo
2 Jacob Thornton @fat
3 Larry the Bird @twitter

Striped rows table

Use .table-striped to add zebra-striping to any table row within the 'tbody'. (more info)
# First Name Last Name Username
1 Mark Otto @mdo
2 Jacob Thornton @fat
3 Larry the Bird @twitter

Bordered table

Add .table-bordered for borders on all sides of the table and cells. (more info)
# First Name Last Name Username
1 Mark Otto @mdo
2 Mark Otto @TwBootstrap
3 Jacob Thornton @fat
4 Larry the Bird @twitter

Hoverable rows table

Add .table-hover to enable a hover state on table rows within a 'tbody'. (more info)
# First Name Last Name Username
1 Mark Otto @mdo
2 Jacob Thornton @fat
1 John Doe @johnd
3 Larry the Bird @twitter