Edit file File name : layout.html.twig Content :<!DOCTYPE html> <html lang="{{ app.request.locale }}"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport"> {{ encore_entry_link_tags('app') }} {{ encore_entry_script_tags('app') }} {% block styles %}{% endblock %} {% if block('document_title') is defined %} <title>{{ block('document_title') }}</title> {% endif %} </head> <body class="pad export_print"> <div class="wrapper"> <section class="export"> {% block export %}{% endblock %} </section> </div> {% block javascripts %}{% endblock %} </body> </html> Save