Disable Nav Shifting

Site URL: https://bricktechstudios.com

Hi! I'm trying to fix an issue where the navigation bar slightly shifts up and down when scrolling. I just want it to stay in its fixed position. Here's a screen recording. I'm on Squarespace 7.1. Thanks!

.header-announcement-bar-wrapper.shrink {
    padding-top: 2vw !important;
    padding-bottom: 2vw !important;
}

@rwp Cheers, worked great!