Brine: How to overlap the header on gallery block on landing?

Site URL: https://chihuahua-mayflower-6zj5.squarespace.com/

Hi,

Before I had my header as fixed on top of a slideshow gallery on my landing page.

However, now that I've removed its fixed position, there's a large white gap where the header is now and I'd like it to overlap the gallery block so that it's full screen again. Any suggestions? 

PW: rsp123

Add to Home > Design > Custom CSS

/* Transparent Header */
.homepage .Header-inner--bottom {
    position: absolute;
    z-index: 999;
    width: 100%;
}

Worked perfectly, thank you so much!