.scroll-up-button{position:fixed;z-index:2147483647;background:var(--dark-grey);color:var(--white);text-align:center;bottom:3rem;right:2.5rem;width:2.5rem;height:2.5rem;display:flex;align-items:center;justify-content:center;transition:background-color .3s ease-out 0s}.scroll-up-button:hover{background-color:var(--black)}.scroll-up-button.hide{opacity:0;z-index:-1}