Fullwidth Background Sub menu of Maximenu CK

Hi,
i want the background of the sub menu to be displayed over the full width of the homepage.
but the links of the sub menu should only appear in the width (box) of the main menu.

I use the Custum CSS code:
|ID| li.maximenuck div.floatck {margin-left: calc(50% - 50vw);
margin-right: calc(50% - 50vw); }

Hi
please give me your url to check the menu, you shall not use the margins to do that
CEd

add this css code

PS : and remove your margins code

Thank you, the background of the sub menu is now across the entire width.
But the texts (links) of the sub menu are still on fullwidth. But they should be in the box (see image 3).

ok, then add this