I tested it on firefox and it works fine, the mega menu works on regular and sticky menu without any issue.

There's too many columns to display in that mega menu, it just not fit and its wrap to another line.

The mobile menu will be decreased automatically.

The Language Switcher can be placed only near the menu, it's default for WPML.

hi how can i add the social icon and the flag icon in the top bar on the menu???

I think I didn't explain fully...The menu background color is super when the page is opened for the first time. When I scroll down the page, the menu background turns white. I don't want it.

Thats because you have inserted <h1> tag into the menu item.

#Top_bar #menu ul li.submenu .menu-toggle::after {

.mfn-megamenu-menu a .menu-label {white-space: break-spaces !important;}

When I am trying to add a sub-element to the menu, the content on that page appears below like this:

All of the colors of the menu item using Header Builder are available to change in style tab.

.menu-item .far{margin-left:5px;}

I was also interested in how can one change the background color for the header in tablet and mobile menu?

don´t see where are option to change menu icons colors then scroll, checked from templates, but don´t see from where this blue color come. Can yo ucheck? https://kloon.home7zones.eu/ pw:12345

I'm trying to get a 3-column submenu to display correctly. Each wrap is 1/3.

However in doing so, several visibility problems have appeared: I can't see the menu of the web, I can't see the texts of the pages....

You mean the BeBuilder version by entering the category by the sidebar menu?

Isn't it what you wanted to achieve? Left align of menu items?

If you click, on main menu, on "cursus" or "contact" (anchor) its look like there is a double scroll bar

.mfn-header-menu .mfn-menu-li .mfn-submenu .mfn-menu-link{