#scrollTopBtn,.animate-on-scroll{transition:opacity .3s ease-in-out,transform .3s ease-in-out}#scrollTopBtn{background:#333;color:#fff;border-radius:50%;padding:15px;position:fixed;bottom:20px;right:20px;border:none;cursor:pointer;box-shadow:0 4px 6px rgba(0,0,0,.2);will-change:transform,opacity}#scrollTopBtn:hover{background:#444;transform:scale(1.1);box-shadow:0 6px 12px rgba(0,0,0,.3)}.animate-on-scroll{opacity:0;transform:translateY(30px)}.animate__fadeInUp{opacity:1!important;transform:translateY(0)!important;transition:transform 1s,opacity 1s}.animate-on-scroll:hover,button:hover{transform:scale(1.05);box-shadow:0 4px 10px rgba(0,0,0,.2)}body{font-family:Arial,sans-serif;line-height:1.6;color:#333}@media (max-width:768px){#scrollTopBtn{padding:12px;font-size:16px;bottom:15px;right:15px}.animate-on-scroll{opacity:0;transform:translateY(50px)}.animate__fadeInUp{opacity:1!important;transform:translateY(0)!important}body{font-size:14px}}