How to change full-width header to box width

HTML-CSS
1

What I’d like to do is have the header to be boxed while having the main content staying as is.

I’ve looked at several other threads, but I couldn’t manage to make my way to the solution .

Here is my header CSS that makes its full width

.full-width-content .wrap, .full-width-content .content-sidebar-wrap {
margin: 0 auto;
max-width: 100%;
width: 100%;
}
2

There is not enough context for me to say anything.

Do you have a link to your demo via codepen?

3

I solved it out thanks for the reply btw

4

Just make the width : 80 % and its done