.box{position:absolute}.box img{width:100px;height:100px}.res{margin:20px auto;font-size:16px}.res .score{color:blue}#app{font-family:Avenir,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-align:center;color:#444;margin-top:60px}.block{position:relative;height:300px;width:600px;margin:20px auto;border:1px solid #333}button{background:#009800;color:#fff;padding:10px 15px;border-radius:5px;border:1px solid #fff;font-size:20px;font-family:Georgia,Times New Roman,Times,serif;cursor:pointer}button[disabled]{opacity:.2;cursor:not-allowed}body{padding:0;margin:0;text-align:center}