Show Announcement Bar with Custom Coding in Header

Site URL: https://star-turquoise-mzgf.squarespace.com/

Hi there! I have custom code in the heading of my website (we are linking to multiple websites in the header that do not all live on Squarespace, so we can't use the traditional main navigation bar). However, this means my announcement bar shows up on every page except the homepage. Is there a way I can get it to still show? 

https://star-turquoise-mzgf.squarespace.com/

Add to Home > Design > Custom CSS

body.homepage #page {
    margin-top: 40px;
}
body.homepage header#header {
    display: block;
}
body.homepage header#header>div:not(:first-child) {
    display: none;
}