.site-header{position:sticky;top:0;z-index:100;box-shadow:0 2px 10px rgba(45,36,26,.06)}
.reader-progress{z-index:101}
body.night .site-header{box-shadow:0 2px 10px rgba(0,0,0,.22)}
body.night .header-actions .top-download{border-color:#4b4741}