cat-viewer {
            width: 100vw;
            height: 100vh;
            overflow: hidden;
        }

        #test-message{
            width: 75vw;
            text-align: left;
            background-color: rgb(232, 232, 232);
            position: fixed;
            left: 0%;
            display: block;
            padding: 10px;
        }
    </style>
</body>
</html>
