#app{font-family:Avenir,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-align:center;color:#2c3e50;max-width:20rem;margin:4rem auto}.todo{justify-content:space-between;background-color:#999;margin:2rem 0;padding:1rem 1rem}.todo,.todo div{display:flex}.isDone{text-decoration:line-through}