.scroll-top-button{display:none;position:fixed;z-index:100;right:calc(50% - 660px);bottom:40px;width:44px;height:44px;border-radius:4px;background-color:rgba(0,0,0,.1);cursor:pointer}.scroll-top-button::after{content:'';display:block;position:absolute;left:0;right:0;top:8px;bottom:0;width:20px;height:20px;margin:auto;border:5px solid #fff;border-width:5px 5px 0 0;-webkit-transform:rotate(-45deg);transform:rotate(-45deg)}.scroll-top-button_shown{-webkit-transition:all .3s;transition:all .3s}.scroll-top-button_shown:hover{background-color:rgba(0,0,0,.2)}@media all and (max-width:1400px){.scroll-top-button{left:20px;bottom:80px}}