.c-back-to-top{margin-bottom:var(--spacing-3);position:fixed;bottom:80px;right:40px;transition:opacity .5s ease-out,background-color .5s ease-out;opacity:0;width:48px;height:48px;display:flex;align-items:center;justify-content:center;color:var(--color-white);border:1px solid var(--color-gray-500);border-radius:50%;transform:rotate(90deg);cursor:pointer}@media screen and (min-width:48em){.c-back-to-top{width:64px;height:64px}}.c-back-to-top i{width:20px;height:20px;-webkit-mask-size:20px;mask-size:20px;background-color:var(--color-gray-900);transition:transform .5s ease-out}@media screen and (min-width:48em){.c-back-to-top i{font-size:1.5625rem}}.c-back-to-top.visible{opacity:1}.c-back-to-top:hover i,.c-back-to-top:focus i{transform:translate(-5px) translateZ(1px)}