.scroll-to-top{position:fixed;bottom:20px;right:20px;z-index:1000;opacity:0;transition:opacity .3s ease-in-out}.scroll-to-top.visible{opacity:1}.scroll-to-top-button{background-color:#00a4e1;color:#fff;border:none;border-radius:50%;width:40px;height:40px;font-size:20px;display:flex;align-items:center;justify-content:center;cursor:pointer}.scroll-to-top-button:hover{background-color:#0056b3}