.back-to-top-wrapper{--btt-size:44px;height:100vh;right:0;position:absolute;top:0;width:100px}.back-to-top{align-items:center;background-color:var(--color-bg-light-alt);border:2px solid var(--color-primary);border-radius:var(--btt-size,44px);bottom:var(--site-gutter);color:var(--color-primary);display:flex;height:var(--btt-size,44px);justify-content:center;line-height:var(--btt-size,44px);opacity:0;position:fixed;right:var(--site-gutter);text-align:center;text-decoration:none;visibility:hidden;width:var(--btt-size,44px);z-index:9999}@media(min-width:900px){.back-to-top{--btt-size:55px}}.back-to-top__icon svg{display:block;fill:currentColor}.back-to-top--intersecting{opacity:0;visibility:hidden}.back-to-top--visible{opacity:1;visibility:visible}.back-to-top--fadeIn{animation-name:fade-in;animation-timing-function:linear;animation-duration:1s}@keyframes bounce{0%{transform:translateY(0)}50%{transform:translateY(-5px)}100%{transform:translateY(0)}}@keyframes fade-in{0%{opacity:0}50%{opacity:.5}100%{opacity:1}}