Due to the refactor of the form view, `display:block` wasn't apply on `o_form_nosheet` anymore; This is due to the fact that `d-flex flex-nowrap` are now directly set in the DOM and thus has !important by default. We now only use flex when this is not a `o_form_nosheet` element. Steps to reproduce: 1. Open Sign 2. Click on "Send" -> the style of the dialog form content is broken task-2871070 Link: https://github.com/odoo/odoo/commit/28200c5ad584e9b7f51ffcf7902c8d366b93e2de#diff-26a45bff860d45f36003c55996b92ced0762c62dcd94d5d79bf7b5e4094a1ee0R191 closes odoo/odoo#96964 Signed-off-by: Adrien Dieudonné (adr) <adr@odoo.com>