Adding text to header [7.0 / Brine]

Hi all!  

I am trying to add a few lines of text to the center of the page/between the logo and new navigation. I've tried codes from previous threads but none worked, unfortunately. I am using the Miller template in the Brine family in version 6.0 and I've included a screenshot of what I am hoping to achieve. 

Bonus points if you can include code to get all elements (logo, text, navigation) to be horizontally aligned with each other.

here is the link: https://dan-polyak-snck.squarespace.com/
password: H3LPmePLZ

@tuanphan would love any help if possible! 

Many thanks in advance!

You can add this code to Website > Page (or Design) > Website Tools > Custom CSS

header.Header [data-nc-container="bottom-center"] {
    display: block !important;
    position: static !important;
}
header.Header [data-nc-container="bottom-center"]:before {
    content: "Squarespace Templates 6.0";
    font-family: sofia-pro;
    font-weight: 600;
    font-style: normal;
    font-size: 11px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: white;
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
}