body {
            margin: 0;
            padding: 0;
            font-family: 'Open Sans', sans-serif;
        }
        #header {
            background-color: #f1f1f1;
            border-bottom: 1px solid #ddd;
            padding: 30px;
            text-align: center;
            color: #444;
            font-size: 22px;
        }
        #content {
            padding: 30px;
            text-align: left;
            font-size: 18px;
        }
        #footer {
            border-top: 1px solid #ddd;
            padding: 30px;
            text-align: center;
            color: #444;
            font-size: 18px;
        }