#app{font-family:Avenir,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-align:center;color:#2c3e50;margin-top:60px}.back{width:80%;height:800px;top:20%;margin:auto;box-shadow:0 2px 8px rgba(0,0,0,.1)}.msg{padding-top:20%}.again{width:100px;height:40px;border-radius:5px}