odoo/ext/custom-addons/mailchimp/static/src/scss/mailchimp.scss

.o_kanban_view {
  .oe_kanban_mailchimp {
    .o_title {
      margin-bottom: 16px;
    }
    .o_kanban_primary_bottom {
      margin-top: 16px;
    }
    .oe_margin_top_8 {
      margin-top: 8px;
    }
    .oe_margin_bottom_8 {
      margin-bottom: 8px;
    }
  }
}

.o_white_body {
  background-color: white;
}