button{background-color:#f5e51b;color:#236b8e;border:none;padding:10px 20px;margin:0 10px;font-size:16px;cursor:pointer;border-radius:5px;transition:background-color .3s}button:hover{background-color:#f5e51b}.container{margin:auto;padding:20px;text-align:center;max-width:400px}body{margin:0}