header.site-header{box-shadow:none;transition:top .4s,background-color .3s ease-in-out,padding .3s ease-in-out}header.site-header.scrolled{background-color:#fff;box-shadow:0 2px 3px #0000000d}body:has(.alert-banner) header.site-header{background-color:#fff;box-shadow:0 2px 3px #0000000d}body:has(.alert-banner) header.site-header>.container{padding-block:16px}