:root{--primary-color:#2c3e50}#app{font-family:Avenir,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:var(--main-color);max-width:600px;margin:5px auto;border:.5px solid var(--primary-color);border-radius:10px}