Issue #3213995 by groendijk, bnjmnm, gauravvvv, smovs, cindytwilliams,...

Issue #3213995 by groendijk, bnjmnm, gauravvvv, smovs, cindytwilliams, smustgrave, lauriii: Olivero: submit button is too wide in the off canvas dialog box

(cherry picked from commit 808ceae4)