Make headers full width

Hello,
I wanna make the header (logo and the menu bar) full width on my page. Something like the “full width stretched” in the layout builder but for the header. My website is www.corporategovernance.shop

Hi,

Here is the CSS code to make the header bar stretched:

.site-header .container {
    width: 100%;
}

Put the code into customize > additional CSS

Regards,
Awan