A red button with large Times New Roman text, using block layout, aligned to the center, with none, bounce, and a :hover { background-color: #555; color: white; }.
<button style='background-color: yellow; font-size: 24px; font-family: Arial; display: none; text-align: center; box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3); animation: spin 2s; transition: background-color 0.4s ease; :hover { background-color: #555; color: white; }'>Contact Us</button> @keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }