#scrollUpBtn{position:fixed;right:24px;bottom:40px;padding:14px 28px;border-radius:999px;background:#3c7473;color:#ffffff;font-family:inherit;font-size:15px;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;text-decoration:none;box-shadow:0 6px 18px rgba(0,0,0,0.18);opacity:0;visibility:hidden;transform:translateY(10px);transition:all 0.3s ease;z-index:9999}#scrollUpBtn.show{opacity:1;visibility:visible;transform:translateY(0)}#scrollUpBtn:hover{background:#256963;box-shadow:0 10px 24px rgba(0,0,0,0.25)}