VBO elements not displayed properly on Bootstrap

According to my comment on this vbo issue: https://www.drupal.org/project/views_bulk_operations/issues/2892453#comm...
We need to adapt somme css to be able to view the first column of the view when vbo is used and when the first column is the vbo column.
note: the problem is not in vbo 1.x (I have tested twice... seems really strange), but in vbo 2.x
here is the tweak:

//bug bootstrap vs vbo: vbo checkbox not visible id in first column
.vbo-table input[type="checkbox"] {
	margin-left:0;
}