.animated-container { background: linear-gradient(-45deg, #111827, #15122c, #24243e, #0B0F19); background-size: 400% 400%; animation: gradientBG 15s ease infinite; } @keyframes gradientBG { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } } @keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } } input:autofill { background: transparent; }