Centering Navigation

Website: https://octagon-bugle-k97s.squarespace.com/

Password: 12345

Hi! I added the first code below, in red, to prevent the navigation links from stacking while centered. While the links aren't stacking anymore (yay!), they aren't center. I tried adding in a code below, in blue, to get them centered but it didn't seem to help. Any tips?

//center nav without stacking//
.header-nav-list {
    -ms-flex-wrap: nowrap !important;
        flex-wrap: nowrap !important;
}

//center nav links//

.header-layout-branding-center-nav-center .header-title-nav-wrapper {
    width: 100% !important;
    flex: 0 0 100% !important;
}
div.header-actions-action a.cart-style-icon {
    position: relative;
    right: 3vw;
}