body{background-color:#f4f4f4;color:#333;font-family:Arial,sans-serif;margin:0;padding:0}.calculator-container{background-color:#fff;border-radius:8px;box-shadow:0 0 10px rgba(0,0,0,.1);margin:50px auto;max-width:800px;padding:20px}.controls{align-items:center;display:flex;justify-content:flex-start;margin-bottom:20px}.controls button,.controls select{font-size:14px;margin-right:10px;padding:10px}.controls label{margin-right:5px}.controls button:hover{background-color:#005bb5;color:#fff}table{border-collapse:collapse;margin-bottom:20px;width:100%}table td,table th{border:1px solid #ccc;padding:5px;text-align:left}table td:first-child,table th:first-child{width:200px}input[type=number]{border:1px solid #ccc;border-radius:4px;box-sizing:border-box;font-size:14px;padding:5px;width:100%}.results-container{margin-top:20px}.result-item{font-size:16px;margin-bottom:10px}.remove-button{background-color:#ff4d4d;border:none;border-radius:4px;color:#fff;cursor:pointer;padding:5px 10px}.remove-button:hover{background-color:#c00}