.back-to-top{opacity:0;position:fixed;right:0;bottom:0;left:0;background:var(--color-grey-bg);transform:translateY(100%);z-index:400;transition:opacity var(--transition-large),transform var(--transition-large)}.back-to-top:focus-within,.back-to-top[show]{opacity:1;transform:translateY(0)}.back-to-top__button{padding:var(--space-16) var(--gutter);display:flex;align-items:center;justify-content:center;gap:var(--space-8);width:100%}
.back-to-top__button svg{margin-bottom:3px;display:block}.back-to-top-target{position:absolute;top:80vh;left:0}