Alignment problems header and content with Astra/ Spectra

Hello,

I am currently rebuilding this website https://www.clara-schumann-kammerchor.de in WordPress (Astra Theme with Spectra), because the person who created it in HTML is no longer available. The result currently looks like this: https://clarasnet.de/

I still have problems with the layout:

1) The header should take up exactly the width of the container, but protrudes symmetrically beyond both sides of the container (to different degrees in different browsers).

2) The text should have a clearly recognizable distance to the right edge of the photo, which is mentally extended downwards. This works reasonably well in the editor, but when I put the page online, the result is more than unsatisfactory.

Do I have to change anything “CSS-wise”? If so, where do I do this? I am an absolute beginner in this respect.

Many thanks in advance!

` wp-core

version: 6.4.3
site_language: de_DE
user_language: de_DE
timezone: +00:00
permalink: /%postname%/
https_status: false
multisite: false
user_registration: 0
blog_public: 1
default_comment_status: open
environment_type: production
user_count: 1
dotorg_communication: true wp-paths-sizes

wordpress_path: /homepages/38/d679586997/htdocs/app680685495
wordpress_size: 57,85 MB (60658645 bytes)
uploads_path: /homepages/38/d679586997/htdocs/app680685495/wp-content/uploads
uploads_size: 12,59 MB (13199941 bytes)
themes_path: /homepages/38/d679586997/htdocs/app680685495/wp-content/themes
themes_size: 21,87 MB (22931054 bytes)
plugins_path: /homepages/38/d679586997/htdocs/app680685495/wp-content/plugins
plugins_size: 43,89 MB (46022563 bytes)
database_size: 26,36 MB (27639808 bytes)
total_size: 162,56 MB (170452011 bytes) wp-active-theme

name: Astra (astra)
version: 4.6.8
author: Brainstorm Force
author_website: https://wpastra.com/about/?utm_source=theme_preview&utm_medium=author_link&utm_campaign=astra_theme
parent_theme: none
theme_features: core-block-patterns, astra_hooks, widgets-block-editor, align-wide, automatic-feed-links, title-tag, post-thumbnails, starter-content, html5, post-formats, custom-logo, customize-selective-refresh-widgets, editor-style, woocommerce, rank-math-breadcrumbs, amp, widgets, menus
theme_path: /homepages/38/d679586997/htdocs/app680685495/wp-content/themes/astra
auto_update: Aktiviert wp-themes-inactive (1)

Twenty Twenty-Four: version: 1.0, author: Das WordPress-Team, Automatische Aktualisierungen aktiviert wp-mu-plugins (3)

1&1 Managed WordPress: version: 1.1.0, author: 1&1
1&1 Product Subdomain: version: 1.1.0, author: 1&1
IONOS Marketplace: version: 1.1.6, author: IONOS wp-plugins-active (10)

Custom Fonts: version: 2.1.3, author: Brainstorm Force, Automatische Aktualisierungen aktiviert
IONOS Assistant: version: 8.5.10, author: IONOS, Automatische Aktualisierungen aktiviert
IONOS Help: version: 2.2.1, author: IONOS, Automatische Aktualisierungen aktiviert
IONOS Journey: version: 2.1.1, author: IONOS, Automatische Aktualisierungen aktiviert
IONOS Login: version: 2.2.1, author: IONOS, Automatische Aktualisierungen aktiviert
IONOS Navigation: version: 1.0.7, author: IONOS, Automatische Aktualisierungen aktiviert
IONOS Performance: version: 2.0.3, author: IONOS, Automatische Aktualisierungen aktiviert
IONOS Security: version: 1.1.0, author: IONOS, Automatische Aktualisierungen aktiviert
Spectra: version: 2.12.4, author: Brainstorm Force, Automatische Aktualisierungen aktiviert
Yoast Duplicate Post: version: 4.5, author: Enrico Battocchi & Team Yoast, Automatische Aktualisierungen aktiviert wp-media

image_editor: WP_Image_Editor_GD
imagick_module_version: Nicht verfügbar
imagemagick_version: Nicht verfügbar
imagick_version: Nicht verfügbar
file_uploads: 1
post_max_size: 128M
upload_max_filesize: 128M
max_effective_size: 128 MB
max_file_uploads: 20
gd_version: 2.3.0
gd_formats: GIF, JPEG, PNG, WebP, BMP, XPM
ghostscript_version: 9.53.3 wp-server

server_architecture: Linux 4.4.400-icpu-097 x86_64
httpd_software: Apache
php_version: 7.4.33 64bit
php_sapi: cgi-fcgi
max_input_variables: 1000
time_limit: 30
memory_limit: 1024M
max_input_time: -1
upload_max_filesize: 128M
php_post_max_size: 128M
curl_version: 7.74.0 OpenSSL/1.1.1w
suhosin: false
imagick_availability: false
pretty_permalinks: true
htaccess_extra_rules: true
current: 2024-03-10T18:59:08+00:00
utc-time: Sunday, 10-Mar-24 18:59:08 UTC
server-time: 2024-03-10T18:59:07+00:00 wp-database

extension: mysqli
server_version: 10.6.15-MariaDB-log
client_version: mysqlnd 7.4.33
max_allowed_packet: 67108864
max_connections: 3000 wp-constants

WP_HOME: https://clarasnet.de/
WP_SITEURL: https://clarasnet.de/
WP_CONTENT_DIR: /homepages/38/d679586997/htdocs/app680685495/wp-content
WP_PLUGIN_DIR: /homepages/38/d679586997/htdocs/app680685495/wp-content/plugins
WP_MEMORY_LIMIT: 40M
WP_MAX_MEMORY_LIMIT: 1024M
WP_DEBUG: false
WP_DEBUG_DISPLAY: true
WP_DEBUG_LOG: false
SCRIPT_DEBUG: false
WP_CACHE: false
CONCATENATE_SCRIPTS: undefined
COMPRESS_SCRIPTS: undefined
COMPRESS_CSS: undefined
WP_ENVIRONMENT_TYPE: Nicht definiert
WP_DEVELOPMENT_MODE: undefined
DB_CHARSET: utf8
DB_COLLATE: undefined wp-filesystem

wordpress: writable
wp-content: writable
uploads: writable
plugins: writable
themes: writable
mu-plugins: writable

The page I need help with: [log in to see the link]