*{padding:0;margin:0;-webkit-box-sizing:border-box;box-sizing:border-box}#app .container{font-size:23px;font-weight:600}#app .btn{padding:8px 12px;border:none;background-color:#0052cc;color:#fff;font-size:12px;border-radius:4px}#app .btn:hover{background-color:#002966}#app .btn:active{background-color:#0052cc}