A footer containing a yellow button with linear-gradient(to right, red, yellow) background that says 'Hello World', followed by a large text description, with bounce.
<header><button style='background-color: linear-gradient(to right, red, yellow); font-size: 16px; animation: fade-in 2s;'>Login</button><p style='font-size: 16px;'>sign up</p></header> @keyframes slide-up { from { transform: translateY(100%); } to { transform: translateY(0); } } transition: background-color 0.4s ease;