============================================ */
@media (max-width: 768px) {
    .card.shadow-sm {
        height: calc(100vh - 120px);
        max-height: calc(100vh - 120px);
        border-radius: 0;
    }

    .chat-messages {
        min-height: 150px;
        padding: 0.75rem;
    }

    .message-wrapper {
        max-width: 90%;
    }

    .message-content {

        expected = "http://example/foo.jpg";
        assertGetThumbnailUrl(data, expected);

        data = "<img src=\"http://example/foo.jpg\" width=\"100px\" height=\"100px\">";
        expected = "http://example/foo.jpg";
        assertGetThumbnailUrl(data, expected);
    }

    private void assertGetThumbnailUrl(String data, String expected) throws Exception {