A button containing a purple button with linear-gradient(to bottom, blue, green) background that says 'Hello World', followed by a medium text description, with spin.
<footer><button style='background-color: linear-gradient(to right, red, yellow); font-size: 16px; animation: spin 2s;'>Hello World</button><p style='font-size: 16px;'>sign up</p></footer> @keyframes slide-up { from { transform: translateY(100%); } to { transform: translateY(0); } } transition: all 0.3s ease;