Main menu first level

Thank you for reaching out and for your kind words about SOLO! To make the level 0 background of the main menu transparent over the logo image while using the "Classic Ivory Lace" color scheme, you'll need to modify the CSS directly through Chrome's Inspect tool.
The name for the main navigation is "navigation__menubar-main".

.navigation__menubar-main li.li-1 {
--r-bg: transparent!important;
}

Best wishes,
Alaa

Thank you for your quick response. Unfortunately, it doesn't work.

Did you clear cache after making the change?

Naturally. I have been programming for forty years.

Thank you @fkelly.
@f.sor, the previous code sets the li element to be transparent. However, you will still need to disable any colors applied within the menu region, including the anchor tags and buttons contained within the li. Here is an example:

/* Disalbe links and button in the first level and primary menu Ul and region */
#primary-menu,
#primary-menu .navigation__menubar-main,
#primary-menu .navigation__menubar-main li.li-1 > a,
#primary-menu .navigation__menubar-main li.li-1 > button,
#primary-menu .navigation__menubar-main li.li-1 > a:hover,
#primary-menu .navigation__menubar-main li.li-1 > button:hover {
  --r-bg: transparent;
}
/* Apply background image to LI */
#primary-menu .navigation__menubar-main li.li-1 {
  --r-bg: transparent url("https://www.w3schools.com/cssref/paper.gif") repeat !important;
  background: var(--r-bg);
}

If you're using a sub-theme, please add the CSS to that sub-theme. If not, navigate to your-site.com/admin/appearance/settings/solo, expand the "Global Site" section, and paste the CSS into the "CSS Dynamic" field. Remember to clear the caches afterward. For further customization, use the Google Chrome Inspector; the same methods can be applied. Note: This code is designed for the "main" menu located in the Primary Menu region.

Best wishes,
Alaa

Yeees!
Thank you very much Alaa, you are very kind!

The first part of your code plus the second small change solved it (#primary-menu .navigation__menubar-main li:not(.li-1) )

You're welcome! If you have any more questions or need further assistance, feel free to ask. Happy to help!

Automatically closed - issue fixed for 2 weeks with no activity.