body {
            font-family: 'Arial', sans-serif;
            line-height: 1.6;
            color: #333;
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            background-color: #f9f9f9;
        }
        header {
            background-color: #4CAF50;
            color: white;
            padding: 20px;
            text-align: center;
            font-size: 24px;
            font-weight: bold;
            position: relative;
        }
        .logo {
            font-size: 32px;
            text-shadow: 2px 2px 4px #000000;
        }
        nav {
            background-color: #333;
            overflow: hidden;
        }
        nav a {
            float: left;
            display: block;
            color: white;
            text-align: center;
            padding: 14px 16px;
            text-decoration: none;
        }
        nav a:hover {
            background-color: #ddd;
            color: black;
        }
        .mobile-nav-toggle {
            display: none;
            cursor: pointer;
            font-size: 24px;
            padding: 10px;
            background-color: #333;
            color: white;
            position: absolute;
            top: 0;
            right: 0;
        }
        @media screen and (max-width: 600px) {
            nav a:not(:first-child) {display: none;}
            nav a.mobile-nav-toggle {display: block;}
            .nav-responsive {position: relative;}
            .nav-responsive a {
                float: none;
                display: block;
                text-align: left;
            }
        }
        .content {
            background-color: white;
            padding: 20px;
            margin-top: 20px;
            box-shadow: 0 0 10px rgba(0,0,0,0.1);
        }
        h1, h2, h3 {
            color: #4CAF50;
        }
        h1 {
            font-size: 28px;
            border-bottom: 2px solid #4CAF50;
            padding-bottom: 10px;
        }
        h2 {
            font-size: 24px;
            margin-top: 30px;
        }
        h3 {
            font-size: 20px;
            margin-top: 25px;
        }
        .download-btn, .login-btn {
            display: inline-block;
            background-color: #4CAF50;
            color: white;
            padding: 10px 20px;
            text-align: center;
            text-decoration: none;
            margin: 10px 0;
            border-radius: 5px;
            font-weight: bold;
        }
        .download-btn:hover, .login-btn:hover {
            background-color: #45a049;
        }
        img {
            max-width: 100%;
            height: auto;
            margin: 20px 0;
            border-radius: 5px;
        }
        .image-container {
            text-align: center;
        }
        footer {
            background-color: #333;
            color: white;
            text-align: center;
            padding: 20px;
            margin-top: 20px;
        }
        .tags {
            margin: 20px 0;
        }
        .tag {
            display: inline-block;
            background-color: #f0f0f0;
            color: #333;
            padding: 5px 10px;
            margin: 5px;
            border-radius: 3px;
            text-decoration: none;
        }
        .tag:hover {
            background-color: #ddd;
        }