:root{--max-width-narrow:1024px;--max-width:1590px;--max-width-extra-wide:1920px}.btn__back-to-top{--button-offset:25%;--button-position-right:1rem;--button-position-bottom:5.5rem}@media (width>=960px){.btn__back-to-top{--button-position-bottom:1rem}}@media (width>=1920px){.btn__back-to-top{--button-position-right:max(1rem, calc((100vw - 1920px) / 2 - 4.5rem))}}.btn__back-to-top{bottom:var(--button-position-bottom);right:var(--button-position-right);z-index:1;display:none;position:fixed}.btn__back-to-top:not([hidden]){display:flex}