Hi @lacali21,
I added the below css to my custom.css file and the website header is sticky when you scroll down.
.not-at-top #t4-header.t4-sticky {
background: rgba(255,255,255,0.95);
backdrop-filter: blur(8px);
position: sticky !important;
top: 0px !important;
z-index: 300;
}
Kind regards,