A blue box with ridge border, radial-gradient(circle, pink, purple) background, medium text centered inside, using none layout, with :hover { background-color: #555; color: white; } and slide-up.
<div style='background: linear-gradient(to bottom, blue, green); border: 2px double white; font-size: 12px; text-align: center; display: none; justify-content: flex-start; align-items: center; animation: slide-up 2s; transition: background-color 0.4s ease; :hover { background-color: #555; color: white; }'>Hello World</div> @keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateY(0); } 40% { transform: translateY(-30px); } 60% { transform: translateY(-15px); } }