A black box with double border, radial-gradient(circle, pink, purple) background, large text centered inside, using flex layout, with :hover { transform: scale(1.1); } and spin.
<div style='background: linear-gradient(to right, red, yellow); border: 2px solid white; font-size: 12px; text-align: center; display: block; justify-content: space-around; align-items: center; animation: fade-in 2s; transition: background-color 0.4s ease; :hover { background-color: #555; color: white; }'>Login</div> @keyframes slide-up { from { transform: translateY(100%); } to { transform: translateY(0); } }