body{font-family:Arial,sans-serif;background-color:#f4f4f9;color:#333;margin:0;padding:0;display:flex;justify-content:center;align-items:center;height:100vh}.container{text-align:center;background:#fff;padding:20px;border-radius:10px;box-shadow:0 4px 6px rgba(0,0,0,.1);width:300px}h1{margin-bottom:20px;color:#444}.settings{margin-bottom:20px}label{margin-right:5px}input{width:60px;padding:5px;margin:0 5px;border:1px solid #ccc;border-radius:5px;text-align:center}.result{margin:20px 0;font-size:48px;font-weight:700;color:#007BFF;height:60px;display:flex;justify-content:center;align-items:center}button{background-color:#007BFF;color:#fff;border:0;padding:10px 20px;border-radius:5px;font-size:16px;cursor:pointer;transition:background-color .3s}button:hover{background-color:#0056b3}button i{margin-right:5px}.highlight{color:#28a745;font-size:56px;font-weight:700;animation:pulse .5s ease-in-out infinite alternate}.logo{font-size:100px;color:#f90;text-align:center;margin:20px}.logo .fa{vertical-align:middle}@keyframes pulse{from{transform:scale(1)}to{transform:scale(1.2)}}.history{margin-top:20px;text-align:left}.history h2{font-size:18px;margin-bottom:10px;color:#444}.history ul{list-style-type:none;padding:0;max-height:150px;overflow-y:auto;border:1px solid #ccc;border-radius:5px;padding:10px;background-color:#f9f9f9}.history ul li{margin-bottom:5px;font-size:14px;color:#555}#clear-history-button{margin-top:10px;background-color:#dc3545;color:#fff;border:0;padding:8px 16px;border-radius:5px;font-size:14px;cursor:pointer;transition:background-color .3s}#clear-history-button:hover{background-color:#a71d2a}#toggle-history-button{margin-top:10px;background-color:#6c757d;color:#000;border:0;padding:8px 16px;border-radius:5px;font-size:18px;cursor:pointer;transition:background-color .3s;position:absolute;bottom:10px;right:10px;width:40px;height:40px;background:0 0;border:0;display:flex;align-items:center;justify-content:center;cursor:pointer}#toggle-history-button:hover{background-color:#5a6268}@media (max-width:800px){.container{border:0;background:0 0;box-shadow:none}}