.counter{margin:70px auto;width:300px;height:300px;background-color:#f0f0f0;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:0 4px 8px #0000001a}button{padding:10px 20px;font-size:16px;margin:10px;cursor:pointer;border:none;border-radius:5px;background-color:#007bff;color:#fff;transition:background-color .3s ease}