#scrollTop{box-sizing:border-box;position:absolute;top:200vh;bottom:0;height:100%;z-index:10000}#scrollTop>button{display:flex;flex-direction:column;justify-content:center;align-items:center;margin:0;padding:0;box-sizing:border-box;background-color:rgba(0,0,0,0.5);border:2px solid rgba(255,255,255,0.6);border-radius:1920px;color:rgba(255,255,255,0.9);cursor:pointer;width:48px;height:48px;position:fixed;bottom:60px;right:30px;z-index:100;transition:all .5s ease}#scrollTop>button.scrollTopButtonShow{opacity:1;transform:translateY(0)}#scrollTop>button.scrollTopButtonHide{opacity:0;transform:translateY(100px)}#scrollTop>button>i{font-size:24px}