Align Center LOGO and Nav.

There’s no way to help with CSS questions without a link to your site.

here is it
https://www.thevisionwalker.com/

Did you add this CSS?

.main_nav_container {
    float: left;
    margin-right: -230px;
    width: 100%;
}

Remove that and try:

.main_nav_container {
    display: table;
    margin: 0 auto;
}

It works!
Thank you