A h1 containing a black button with radial-gradient(circle, pink, purple) background that says 'Hello World', followed by a small text description, with spin.
<span><button style='background-color: linear-gradient(to bottom, blue, green); font-size: 16px; animation: fade-in 2s;'>Sign Up</button><p style='font-size: 16px;'>submit</p></span> @keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } } transition: transform 0.2s ease-in-out;