.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:#fff;box-shadow:0 6px 24px #15387814}
main [id]{scroll-margin-top:108px!important}
@media(max-width:800px){.header .nav.open{top:100%;background:#fff;color:#081326;max-height:calc(100dvh - 92px);overflow-y:auto;box-shadow:0 12px 25px #15387820}}