drupal/core/modules/node/templates/node-edit-form.html.twig

{#
/**
 * @file
 * Default theme implementation for a node edit form.
 *
 * Two column template for the node add/edit form.
 *
 * This template will be used when a node edit form specifies 'node_edit_form'
 * as its #theme callback.  Otherwise, by default, node add/edit forms will be
 * themed by form.html.twig.
 *
 * Available variables:
 * - form: The node add/edit form.
 *
 * @see seven_form_node_form_alter()
 *
 * @ingroup themeable
 */
#}
{{ form }}