Vaadin TabSheet width stuck at 50%

Iā€™m tryin to stretch the tabsheet to 100% of the browser width, but it wont let me.
The enclosing form is set to full width, and the tabsheet too, but the style width will stay at style="width: calc(49.95% - 0.75rem);
How can I bring vaadin to set the width to full?
I tried

on both, the form layout and the tabsheet.
Thanks for the help. šŸ™

use form.add(tabSheet, 2);

Thanks a lot, so easy :smile: