#app{min-height:100vh}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;color:#333;background:#f5f5f5}a{color:#1976d2;text-decoration:none}button{cursor:pointer}