header{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid #fff3;justify-content:center;align-items:center;width:100%;padding:1rem 0;display:flex;position:fixed;top:0}header.dark{border-bottom:1px solid #0003}header.dark>img{filter:invert()}header>img{width:11.25rem}