#app{font-family:Avenir,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:#2c3e50;max-width:750px;margin:0 auto;overflow-x:hidden}*{margin:0;padding:0;box-sizing:border-box}body{background-color:#f5f5f5}