body {
            font-family: Arial, sans-serif;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            background-color: #f5f5f5;
            color: #333;
        }
        h1 {
            text-align: center;
            color: #2c3e50;
            margin-bottom: 30px;
        }
        .converter-container {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 30px;
        }
        .converter-box {
            flex: 1;
            min-width: 300px;
            background-color: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        h2 {
            color: #3498db;
            margin-top: 0;
            font-size: 18px;
            border-bottom: 1px solid #eee;
            padding-bottom: 10px;
        }
        .input-group {
            margin-bottom: 15px;
        }
        label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
            color: #555;
        }
        input {
            width: 100%;
            padding: 8px;
            border: 1px solid #ddd;
            border-radius: 4px;
            box-sizing: border-box;
        }
        button {
            background-color: #3498db;
            color: white;
            border: none;
            padding: 10px 15px;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
            transition: background-color 0.3s;
        }
        button:hover {
            background-color: #2980b9;
        }
        .result {
            margin-top: 15px;
            padding: 10px;
            border-radius: 4px;
            font-weight: bold;
            text-align: center;
            display: none;
        }
        .color-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 20px;
            background-color: white;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            border-radius: 8px;
            overflow: hidden;
        }
        .color-table th, .color-table td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid #eee;
        }
        .color-table th {
            background-color: #3498db;
            color: white;
        }
        .color-table tr:hover {
            background-color: #f9f9f9;
        }
        .color-swatch {
            width: 30px;
            height: 30px;
            border-radius: 4px;
            border: 1px solid #ddd;
        }