.app{max-width:1400px;margin:0 auto;padding:10px}.header{text-align:center;margin-bottom:15px;padding:10px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:6px}.header h1{font-size:1.2rem;margin:0}.container{background:#fff;padding:15px;border-radius:6px;box-shadow:0 2px 10px #0000001a}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f5f5}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}