#button__back-to-top{align-items:center;background-position:0 0;background-size:100% 100%;border:none;bottom:10px;box-shadow:0 1px 2px rgb(0 0 0 / .1),1px 1px 4px rgb(0 0 0 / .15);display:flex;height:4.2rem;justify-content:center;padding:0;position:fixed;right:calc((4.2rem + 10px)*-1);transition:all .25s ease-in-out;width:4.2rem}#button__back-to-top.visible{right:10px}#button__back-to-top:focus,#button__back-to-top:hover{background-position:100% 100%;background-size:300% 150%;outline:none}#button__back-to-top .icon{fill:#fdfdfd;align-items:center;justify-content:center;max-height:67.5%;width:67.5%}