body { font-family: Arial, sans-serif; margin: 0; padding: 20px; background-color: #f4f4f4; } h1 { text-align: center; } form { max-width: 400px; margin: 0 auto; padding: 20px; background: #fff; border-radius: 5px; box-shadow: 0 0 10px rgba(0,0,0,0.1); } input, button { width: 100%; padding: 10px; margin: 5px 0; box-sizing: border-box; } button { background-color: #007bff; color: white; border: none; cursor: pointer; } button:hover { background-color: #0056b3; } table { width: 100%; border-collapse: collapse; margin-top: 20px; } table, th, td { border: 1px solid #ddd; padding: 8px; text-align: center; } th { background-color: #007bff; color: white; }