Code:
	<IfModule mod_headers.c>
    # Allow access from all domains for webfonts (see contao/core-bundle#528)
    <FilesMatch "\.(ttf|ttc|otf|eot|woff2?|font\.css)$">
        Header set Access-Control-Allow-Origin "*"
    </FilesMatch>
</IfModule>
<IfModule mod_rewrite.c>
    RewriteEngine On
    # Determine the RewriteBase automatically and set it as environment variable.
    # If you are using Apache aliases to do mass virtual hosting or installed the
    # project in a subdirectory, the base path will be prepended to allow proper
    # resolution of the app.php file and to redirect to the correct URI. It will
    # work in environments without path prefix as well, providing a safe, one-size
    # fits all solution. But as you do not need it in this case, you can comment
    # the following 2 lines to eliminate the overhead.
    RewriteCond %{REQUEST_URI}::$1 ^(/.+)/(.*)::\2$
    RewriteRule ^(.*) - [E=BASE:%1]
    # Sets the HTTP_AUTHORIZATION header removed by Apache
    RewriteCond %{HTTP:Authorization} .
    RewriteRule ^ - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
    # Redirect to URI without front controller to prevent duplicate content
    # (with and without `/app.php`). Only do this redirect on the initial
    # rewrite by Apache and not on subsequent cycles. Otherwise we would get an
    # endless redirect loop (request -> rewrite to front controller ->
    # redirect -> request -> ...).
    # So in case you get a "too many redirects" error or you always get redirected
    # to the start page because your Apache does not expose the REDIRECT_STATUS
    # environment variable, you have 2 choices:
    # - disable this feature by commenting the following 2 lines or
    # - use Apache >= 2.3.9 and replace all L flags by END flags and remove the
    #   following RewriteCond (best solution)
    RewriteCond %{ENV:REDIRECT_STATUS} ^$
    RewriteRule ^app\.php(?:/(.*)|$) %{ENV:BASE}/$1 [R=301,L]
    # If the requested filename exists, simply serve it.
    # We only want to let Apache serve files and not directories.
    RewriteCond %{REQUEST_FILENAME} -f
    RewriteRule ^ - [L]
	# Versuch Nr1. klappt nicht
    # 
    # RewriteCond %{HTTPS} !=on 
    # RewriteCond %{ENV:HTTPS} !=on 
    # RewriteRule .* https://%{SERVER_NAME}%{REQUEST_URI} [R=301,L] 
    # Versuch Nr2. klappt leider auch nicht
    # meine-website ist hier nur ein Platzhalter
    # 
    # Von ohne www auf mit www umleiten
    # RewriteCond %{HTTP_HOST} ^meine-website\.de [NC]
    # RewriteRule (.*) https://www.meine-website.de/$1 [R=301,L]
*        # HTTPS aktivieren
    # RewriteCond %{HTTPS} !=on
    # RewriteRule .* https://%{SERVER_NAME}%{REQUEST_URI} [R,L]
    # RewriteCond %{REQUEST_FILENAME} !-f
    # RewriteRule ^(.*)$ app.php [QSA,L]
    # Rewrite all other queries to the front controller.
    RewriteRule ^ %{ENV:BASE}/app.php [L]
</IfModule>
<IfModule !mod_rewrite.c>
    <IfModule mod_alias.c>
        # When mod_rewrite is not available, we instruct a temporary redirect of
        # the start page to the front controller explicitly so that the website
        # and the generated links can still be used.
        RedirectMatch 302 ^/$ /app.php/
        # RedirectTemp cannot be used instead
    </IfModule>
</IfModule>
 Hier einmal die durchkommentierte .htaccess