body {
            background-color: #81b97b;
            margin: 0;
            color: #008aab;
            font-family: "Georgia", serif;
        }

        .ua-header {
            width: 100%;
            height: auto;
            padding-top: 50px;
        }

        .book-cover {
            width: 75%;
            height: auto;
            padding-top: 50px;
            filter: drop-shadow(10px 10px 4px #666);
        }

        .ua-building {
            width: 75%;
            height: auto;
            margin-top: 50px;
            filter: drop-shadow(10px 10px 4px #666);
            border: 5px solid #fff;
        }

        .banner {
            width: 100%;
            background-color: #fff;
            margin-top: 25px;
            margin-bottom: 25px;
            text-align: center;
            font-size: clamp(1rem, -0.875rem + 8.333vw, 1.5rem);
        }

        .banner-item {
            padding: 10px;
            display: inline-block;
            width: 20%;
            text-align: center;
        }

        .button-group {
            background-color: #fff;
            padding: 15px;
            margin-top: 20px;
        }

        .button {
            display: inline-block;
            padding: 10px 20px;
            margin: 10px;
            background-color: #4CAF50;
            color: white;
            text-decoration: none;
            font-size: 20px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s;
            text-transform: uppercase;
        }

        .button:hover {
            background-color: #45a049;
        }

        .dropdown {
            display: inline-block;
        }

        .dropdown-content {
            display: none;
            position: absolute;
            background-color: #f9f9f9;
            min-width: 160px;
            box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
            z-index: 1;
        }

        .dropdown-content a {
            color: black;
            padding: 12px 16px;
            text-decoration: none;
            display: block;
        }

        .dropdown-content a:hover {
            background-color: #f1f1f1;
        }

        .dropdown:hover .dropdown-content {
            display: block;
        }

        .dropbtn {
            border: none;
            cursor: pointer;
        }

        .ua-address {

            filter: drop-shadow(4px 4px 2px #000);
            font-size: clamp(0.7rem, -0.995rem + 8.333vw, 1.5rem);
            position: absolute;
            top: 85%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: white;
            text-align: center;
            font-weight: bold;
        }