body { font-family: sans-serif; background: #f4f4f9; display: flex; justify-content: center; padding: 20px; }
.container { background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); width: 300px; }
input { width: 100%; padding: 10px; margin: 10px 0; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; }
button { width: 100%; padding: 10px; background: #007bff; color: white; border: none; border-radius: 4px; cursor: pointer; }