A h3 containing a green button with radial-gradient(circle, pink, purple) background that says 'Sign Up', followed by a small text description, with spin.
<textarea><button style='background-color: linear-gradient(to bottom, blue, green); font-size: 20px; animation: fade-in 2s;'>Submit</button><p style='font-size: 20px;'>hello world</p></textarea> @keyframes fade-in { from { opacity: 0; } to { opacity: 1; } } transition: background-color 0.4s ease;