Thanks, that works.
Thanks for the tip. I made these changes individually using the custom CSS without considering the impact on the entire template. My CSS knowledge is based on "try until you get the desired result"

I. Popp

Hello

Would you have a URL to an example of your module?

Ciaran

The menu is in a module at position sidecol-1b - but it is in the reserved area.
I have sent the link and access data to info@joomla51.com.

Thanks
I. Popp

Thank you

To amend try adding the following to the Custom CSS field of your templates parameters (Extensions -> Templates -> [YourTemplateStyle] -> Custom CSS)....

.navbar-toggler {

    background: black;

}

Edit to taste

Ciaran

Unfortunately it doesn't work. The problem is that the white stripes on the light gray background are difficult to see. Only after tapping the icon does the background of the icon change to a darker green color and the vertical menu is displayed.

Hello

I do not see the suggested CSS in your source. Can you confirm that you have added it to the correct field and template style for this page? Maybe add to all styles if you have multiple.

Ciaran

Yes, I have some versions of the Natalie template for individual pages that I have defined a little differently. I have removed this code snippet because it didn't work. Even though I have inserted it into ALL versions of Natalie in the custom CSS.

I have now inserted your suggested code again. I have also deleted the cache, updated everything... It doesn't work.

This problem only occurs on the mobile phone. Instead of the navigation menu in the sidecol-A position, only this icon with the three white stripes appears. These are difficult to recognize.

If you tap on this, a green background appears and the submenu also appears.

It would be sufficient if these 3 stripes were displayed in a different color instead of white.

Hello

I have added the suggested CSS to the start of your custom CSS field and the issue appears to be resolved. This suggests that you have an error somewhere in your custom CSS field. Only CSS before the error will be parsed by the browser.

Ciaran