Menu full width

I hope you are well today and thank you for your question.

First of all please edit the search form and set its search form style to without search button using the Search Form Customizer on the below path.

Admin Area -> Ivory Search -> Search Forms -> Edit Search Form -> Design -> Search Form Customizer

Best regards,

Hi Vinod, yes I did that…
see image: https://hardy.global/instructions.jpg

No, I meant selecting the search form style without button as displayed here https://imgur.com/a/CW7Bvy5 because you are not displaying the button in the menu search form.

Hi Vinod,
Ah, I have done that now; please excuse my foolishness.
Its like this now… https://hardy.global/now.jpg
Regards Garry

Now please use the below custom CSS code.

#menu-main li.is-menu.menu-item {
    display: table-cell;
}

#menu-main .is-menu.default form {
    max-width: 100%;
}

You’re a genius, thanks again Vinod for your exemplary assistance.
Regards Garry

You are always welcome here ??