.openerp .oe_kanban_view .oe_kanban_mass_mailing_campaign { width: 280px; min-height: 141px; } .openerp .oe_kanban_view .oe_kanban_mass_mailing_campaign .oe_kanban_header_right { float: right; } .openerp .oe_kanban_view .oe_kanban_mass_mailing { width: 280px; min-height: 141px; }