.to-top{position:fixed;bottom:25px;right:25px;width:54px;height:54px;display:flex;align-items:center;justify-content:center;background:#000;color:#fff;border-radius:50%;border:none;cursor:pointer;opacity:0;visibility:hidden;z-index:1000;transform:translateY(40px) scale(.82);transition:opacity 0.3s ease,visibility 0.3s ease,transform 0.4s cubic-bezier(.22,1.26,.57,1.01)}.progress-ring{position:absolute;top:0;left:0;transform:rotate(-90deg)}.progress-ring__bg{stroke:rgb(255 255 255 / .15);stroke-width:4;fill:none}.progress-ring__progress{stroke:#fff;stroke-width:4;fill:none;stroke-linecap:round;transition:stroke-dashoffset 0.2s linear}.to-top .arrow{position:relative;z-index:2;pointer-events:none}.to-top.show-ios{opacity:1;visibility:visible;transform:translateY(0) scale(1)}.to-top.hide-ios{opacity:0;visibility:hidden;transform:translateY(40px) scale(.75)}.to-top.tap-ios{transform:scale(.92);transition:transform 0.15s cubic-bezier(.17,.89,.32,1.27)}.to-top:hover{transform:translateY(0) scale(1.06);transition:transform 0.25s cubic-bezier(.22,1.5,.36,1)}