.block{width:400px;border-radius:20px;background-color:#0faf87;color:#fff;text-align:center;padding:100px 0;margin:40px auto}.rank{font-size:1.4em;color:#0faf87;font-weight:700}#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}button{margin-left:10px;color:#fff;background:#0faf87;border:none;padding:8px 16px;border-radius:4px;font-size:16px;letter-spacing:1px;cursor:pointer}button[disabled]{opacity:.2;cursor:not-allowed}