body {
            font-family: 'Arial', sans-serif;
            line-height: 1.6;
            color: #333;
            max-width: 700px;
            margin: 0 auto;
            padding: 20px;
            background-color: #f9f9f9;
        }
        .header {
            background-color: #C0C0C0;
            color: white;
            padding: 20px;
            text-align: center;
            border-radius: 5px 5px 0 0;
        }
        .content {
            background-color: white;
            padding: 20px;
        }
        .footer {
            background-color: #ecf0f1;
            padding: 15px;
            text-align: center;
            font-size: 12px;
            border-radius: 0 0 5px 5px;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }
        th, td {
            border: 1px solid #ddd;
            padding: 12px;
            text-align: left;
        }
        th {
            background-color: #f2f2f2;
        }
        .highlight {
            background-color: #f8f9fa;
            padding: 15px;
            border-left: 4px solid #2c3e50;
            margin: 20px 0;
        }
        .signature {
            margin-top: 30px;
        }
        .cta {
            background-color: #3498db;
            color: white;
            padding: 10px 20px;
            text-decoration: none;
            border-radius: 5px;
            display: inline-block;
            margin: 10px 0;
        }
        @media only screen and (max-width: 600px) {
            body {
                padding: 10px;
            }
            table {
                font-size: 14px;
            }
        }