*{box-sizing:border-box;margin:0;padding:0}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}.app{min-height:100vh;max-width:1200px;margin:0 auto;background-color:#fff;box-shadow:0 0 10px #0000001a}code{font-family:Courier New,Courier,monospace;background-color:#f4f4f4;padding:2px 6px;border-radius:3px;font-size:.9em}button{font-family:inherit}button:hover:not(:disabled){opacity:.9}button:disabled{opacity:.6}input{font-family:inherit;border:1px solid #ccc;border-radius:4px}input:focus{outline:none;border-color:#2196f3}ul{margin-left:20px}h2{margin-bottom:15px}h3{margin-bottom:15px;color:#333}h4{margin-bottom:10px;color:#555}h5{margin-bottom:8px;color:#666;font-size:14px}p{margin-bottom:8px;line-height:1.5}